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question_answer1)
Which one among the following statements is not true?
A)
The LCM of two or more given numbers is the lowest of their common multiple. done
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B)
The HCF of two or more given numbers is the highest of their common factors. done
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C)
The numbers having more than two factors are called coprime numbers. done
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D)
All the above done
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E)
None of these done
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question_answer2)
The ratio between two numbers is 8:5 and their LCM is 360. The larger number is___.
A)
24 done
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B)
72 done
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C)
48 done
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D)
36 done
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E)
None of these done
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question_answer3)
Which one among the following is most appropriate for coprimes?
A)
Numbers having more than two factors are called coprimes. done
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B)
Two numbers are called coprimes, if there is no common factor other than 1, between these two numbers. done
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C)
Two numbers are called coprimes, if there is no common factor other than 2, between these two numbers. done
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D)
Pair of prime numbers are called coprimes. done
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E)
None of these done
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question_answer4)
The least number which when divided by 4, 5 and 6 leaves remainder 3 in each case, is_____.
A)
63 done
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B)
67 done
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C)
71 done
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D)
252 done
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E)
None of these done
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question_answer5)
Find the LCM of 9, 14, 15, 18, 12.
A)
126 done
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B)
252 done
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C)
630 done
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D)
1260 done
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E)
None of these done
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question_answer6)
The LCM of three prime numbers are 4991. Find the between these prime numbers,
A)
47 done
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B)
19 done
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C)
29 done
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D)
31 done
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E)
None of these done
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question_answer7)
The LCM of two numbers is 27. The numbers cannot be____.
A)
3, 27 done
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B)
1. 27 done
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C)
3, 9 done
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D)
9, 27 done
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E)
None of these done
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question_answer8)
The HCF of two numbers is 48. The product of the numbers can be___.
A)
3200 done
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B)
2400 done
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C)
48 done
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D)
4608 done
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E)
None of these done
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question_answer9)
The product of two numbers is 324. Their HCF can be______.
A)
54 done
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B)
9 done
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C)
4 done
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D)
27 done
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E)
None of these done
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question_answer10)
The product of two numbers is 840. Their LCM can be
A)
210 done
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B)
70 done
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C)
420 done
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D)
All the above done
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E)
None of these done
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question_answer11)
The HCF and LCM of the numbers 780 and 210 are respectively ___
A)
30, 5460 done
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B)
60, 2730 done
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C)
90, 10920 done
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D)
30, 2730 done
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E)
None of these done
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question_answer12)
A rectangular courtyard with length 10m 50cm and breadth 4m 20cm is to be paved with square stones of the same size. The least number of such stones required are___.
A)
20 done
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B)
10 done
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C)
8 done
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D)
6 done
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E)
None of these done
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question_answer13)
Least common multiple number of two numbers is 360. Then which one of the following cannot be the highest common factor of the numbers.
A)
36 done
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B)
24 done
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C)
16 done
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D)
15 done
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E)
None of these done
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question_answer14)
Find the LCM of the numbers 10, 7, 8, 11, 52, 27.
A)
1181820 done
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B)
1081080 done
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C)
2162160 done
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D)
540540 done
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E)
None of these done
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question_answer15)
The least common multiple of four numbers is 720. If three numbers are 16, 10 and 40 then fourth number can be _______.
A)
75 done
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B)
144 done
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C)
80 done
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D)
54 done
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E)
None of these done
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question_answer16)
The product of two numbers is 11016 and their HCF is 18. Find their LCM.
A)
1224 done
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B)
612 done
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C)
112 done
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D)
560 done
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E)
None of these done
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question_answer17)
The HCF of the greatest two digit prime numbers and the greatest four digit numbers is ___
A)
195 done
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B)
199 done
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C)
1 done
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D)
97 done
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E)
None of these done
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question_answer18)
The sum of two numbers is 324 and their HCF is 9. Find the numbers.
A)
18, 306 done
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B)
315, 9 done
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C)
27, 297 done
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D)
All the above done
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E)
None of these done
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question_answer19)
The HCF and LCM of two numbers are 28 and 1176 respectively. If the difference between the numbers is 308, then the numbers can be
A)
1176, 28 done
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B)
412, 104 done
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C)
392, 84 done
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D)
402, 94 done
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E)
None of these done
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question_answer20)
Swapnesh wants to mail three parcels to three village schools. He finds that the postal charges are Rs 42, Rs 63 and Rs 294. He wants to buy stamps only of one denomination. Find the greatest denomination of stamps he must buy to mail the three parcels.
A)
23 done
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B)
21 done
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C)
27 done
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D)
31 done
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E)
None of these done
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question_answer21)
The HCF of two numbers is 35 and the other two factors of their LCM are 11 and 17. Find the larger of the two numbers.
A)
595 done
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B)
365 done
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C)
275 done
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D)
385 done
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E)
None of these done
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question_answer22)
Six bells are tolled together They toil at the of 3, 5, 8, 9, 12 and 15 seconds respectively in 24 hours, how many times do they toll together?
A)
4 done
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B)
120 done
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C)
12 done
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D)
240 done
clear
E)
None of these done
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question_answer23)
In a school library there are 1080 books of Mathematics and 792 books of Science. Ms Shilpi, the librarian of the school wants to store these books in shelves such that each shelf should have the same number of books of each subject. What should be the minimum number of each subject in each shelf?
A)
72 done
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B)
36 done
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C)
108 done
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D)
2310 done
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E)
None of these done
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question_answer24)
The product of two numbers is 9126. If HCF of the numbers is 39, find the larger numbers.
A)
39 done
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B)
78 done
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C)
156 done
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D)
117 done
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E)
None of these done
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question_answer25)
HCF of two numbers is 42. If the product of the numbers is 15876, then possible number of such pairs is_______
A)
1 done
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B)
2 done
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C)
3 done
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D)
4 done
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E)
None of these done
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question_answer26)
The least multiple of 7 which leaves a remainder of 5 when divided by 13, 15, 18 and 36, is____.
A)
2345 done
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B)
235 done
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C)
335 done
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D)
2340 done
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E)
None of these done
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question_answer27)
Three tankers can contain 391 litres, 483 litres and 667 litres of diesel respectively. Find the maximum capacity of a container which can measure the diesel of the three containers exact number of times,
A)
17 litres done
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B)
21 litres done
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C)
23 litres done
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D)
29 litres done
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E)
None of these done
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question_answer28)
The least number which when doubled will be exactly divisible by 24, 16, 21 and 28 is ____.
A)
336 done
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B)
168 done
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C)
672 done
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D)
330 done
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E)
None of these done
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question_answer29)
The smallest 5 digit number exactly divisible by 6, 7, 8, 9and 10 is ____.
A)
10080 done
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B)
25200 done
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C)
10008 done
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D)
10540 done
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E)
None of these done
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question_answer30)
Find the least possible length which can exactly measure the lengths 12 m, 14 m 85 cm and 10 m 8 cm.
A)
8316 m done
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B)
3456 m done
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C)
5468 m done
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D)
6902 m done
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E)
None of these done
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question_answer31)
The HCF of 2.59, 6.29 and 3.7 is _____.
A)
0.74 done
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B)
7.4 done
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C)
0.37 done
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D)
3.7 done
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E)
None of these done
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question_answer32)
The LCM of 174, 319 and 377 is _____.
A)
24882 done
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B)
24412 done
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C)
329246 done
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D)
29264 done
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E)
None of these done
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question_answer33)
Which of the following statements is correct?
A)
The HCF of two distinct prime numbers is not 1. done
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B)
The HCF of two co prime numbers is not 1. done
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C)
The HCF of an even and odd number is not even. done
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D)
The HCF of two consecutive odd numbers is not 1. done
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E)
None of these done
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question_answer34)
The greatest number which on dividing 6997 and 5222, leaves a remainder of 12 and 15 respectively, is _____.
A)
127 done
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B)
129 done
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C)
133 done
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D)
141 done
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E)
None of these done
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question_answer35)
The largest number which divides 625,856 and 1626 to leave the same remainder, is _____.
A)
33 done
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B)
21 done
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C)
77 done
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D)
147 done
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E)
None of these done
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question_answer36)
Six bells commence tolling together and toll at the intervals of 3, 5, 8, 10, 12 and 15 seconds respectively in 2 hours. How many times they will toll together?
A)
30 done
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B)
12 done
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C)
60 done
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D)
1 done
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E)
None of these done
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question_answer37)
If the ratio of two numbers is 5: 6 and their HCF is 8, then find their LCM.
A)
300 done
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B)
120 done
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C)
240 done
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D)
160 done
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E)
None of these done
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question_answer38)
If the product of two numbers is 1259712 and their HCF is 27 then find their LCM.
A)
46656 done
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B)
48658 done
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C)
52560 done
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D)
38902 done
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E)
None of these done
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question_answer39)
Among three co-prime numbers, the product of the first two is 18304 and the product of the last two is 72576, find the sum of these numbers.
A)
588 done
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B)
764 done
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C)
686 done
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D)
838 done
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E)
None of these done
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question_answer40)
Find the HCF of\[\frac{2}{3},\frac{10}{9},\frac{4}{15}\].
A)
\[\frac{1}{9}\] done
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B)
\[\frac{2}{45}\] done
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C)
\[\frac{1}{33}\] done
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D)
\[\frac{1}{18}\] done
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E)
None of these done
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