question_answer1) Which of the following is an example for coprime numbers?
A) 2, 6 done clear
B) 4, 9 done clear
C) 11, 33 done clear
D) 3, 5 done clear
View Solution play_arrowquestion_answer2) Which of these is an example for twin primes?
A) 11, 15 done clear
B) 17, 23 done clear
C) 3, 7 done clear
D) 11, 13 done clear
View Solution play_arrowquestion_answer3) Observe the following.
\[\begin{align} & \mathbf{1\times \_\_=30} \\ & \mathbf{2\times \_\_=30} \\ & \mathbf{3\times \_\_=30} \\ & \mathbf{5\times \_\_=30} \\ \end{align}\] 
A) 60 done clear
B) 30 done clear
C) 45 done clear
D) 61 done clear
View Solution play_arrowquestion_answer4) What is the product of the common factors of 10 and 15?
A) 6 done clear
B) 5 done clear
C) 150 done clear
D) 25 done clear
View Solution play_arrowquestion_answer5) Study the given factor tree. One of the factors in the tree is wrong. Identify it.
A) \[\text{6}=\text{2}\times \text{2}\] done clear
B) \[\text{12}=\text{2}\times \text{6}\] done clear
C) \[\text{24}=\text{ 2}\times \text{12}\] done clear
D) \[\text{48}=\text{2}\times \text{24}\] done clear
View Solution play_arrowquestion_answer6) Which of the following statements is correct?
(i) 3 is a factor of 32. (ii) 20 and 32 have 3 common factors. (iii) 63 has only 2 factors other than1 and itself (iv) 7 is a factors of 46. 
A) (i) only done clear
B) (ii) only done clear
C) (i) and (iii) only done clear
D) (i) and (iv) only done clear
View Solution play_arrowquestion_answer7) Which of these is a common factor of 42 and 84?
A) 13 done clear
B) 7 done clear
C) 28 done clear
D) 4 done clear
View Solution play_arrowA) 35 done clear
B) 70 done clear
C) 0 done clear
D) 60 done clear
View Solution play_arrowquestion_answer9) What is the product of the first six multiples of 4?
A) \[~\text{8}\times \text{12}\times \text{2}0\times \text{24}\] done clear
B) \[\text{4}\times \text{12}\times \text{2}0\times \text{24}\] done clear
C) \[\text{4 }\times \text{8 }\times \text{12}\times \text{16}\times \text{2}0\times \text{24}\] done clear
D) \[\text{4}\times \text{8}\times \text{12}\times \text{16}\times \text{24}\] done clear
View Solution play_arrowquestion_answer10) Which is the greatest among the following?
A) The third multiple of 9. done clear
B) The fifth multiple of 4. done clear
C) The seventh multiple of 3. done clear
D) The fourth multiple of 6. done clear
View Solution play_arrowquestion_answer11) The smallest nonzero multiple of a number is___.
A) 0 done clear
B) 1 done clear
C) the number itself done clear
D) 2 done clear
View Solution play_arrowquestion_answer12) The numbers in the box are the multiples of a number. Identify the number.
A) 9 done clear
B) 6 done clear
C) 7 done clear
D) 3 done clear
View Solution play_arrowquestion_answer13) Study the given multiples of two numbers. What is the product of the two numbers?
A) 2 done clear
B) 6 done clear
C) 3 done clear
D) 5 done clear
View Solution play_arrowquestion_answer14) Which of the following is the first common multiple of 3 and 4?
A) 12 done clear
B) 8 done clear
C) 6 done clear
D) 36 done clear
View Solution play_arrowquestion_answer15) Find the sum of second common multiple and first common multiple of 4 and 5.
A) 60 done clear
B) 40 done clear
C) 0 done clear
D) 20 done clear
View Solution play_arrowquestion_answer16) Which of the following is the smallest prime number greater than 50?
A) 53 done clear
B) 50 done clear
C) 47 done clear
D) 57 done clear
View Solution play_arrowquestion_answer17) Which of the following is the greatest prime number less than 50?
A) 50 done clear
B) 49 done clear
C) 47 done clear
D) 43 done clear
View Solution play_arrowquestion_answer18) What is the product of all odd numbers between 3 and 8?
A) 5 done clear
B) 24 done clear
C) 12 done clear
D) 35 done clear
View Solution play_arrowquestion_answer19) Identify the odd number immediately after 73999.
A) 73997 done clear
B) 73990. done clear
C) 73001 done clear
D) 74001 done clear
View Solution play_arrowquestion_answer20) What is the product of all even numbers between 3 and 7?
A) 4 done clear
B) 24 done clear
C) 10 done clear
D) 21 done clear
View Solution play_arrowquestion_answer21) A What is the sum of the odd numbers between 5 and 12?
A) 7 done clear
B) 27 done clear
C) 16 done clear
D) 17 done clear
View Solution play_arrowquestion_answer22) Which is the greatest factor of a number?
A) 0 done clear
B) 1 done clear
C) The number itself done clear
D) Twice the number done clear
View Solution play_arrowquestion_answer23) Find the two factors of 31.
A) 0, 31 done clear
B) 2, 15 done clear
C) 31, 1 done clear
D) 62, 31 done clear
View Solution play_arrowquestion_answer24) Which number should be added to 695 to make it divisible by 10?
A) 1 done clear
B) 2 done clear
C) 0 done clear
D) 5 done clear
View Solution play_arrowquestion_answer25) Which number should be subtracted from 642 to make it divisible by 8?
A) 0 done clear
B) 1 done clear
C) 2 done clear
D) 640 done clear
View Solution play_arrowquestion_answer26) Study the following.
The number is a multiple of 4, between 6 and 15. It is also a factor of 16. 
A) 12 done clear
B) 16 done clear
C) 8 done clear
D) 4 done clear
View Solution play_arrowA) 16 done clear
B) 26 done clear
C) 24 done clear
D) 32 done clear
View Solution play_arrowquestion_answer28) Which of the following numbers have a common factor 8?
A) 32 and 56 done clear
B) 4 and 8 done clear
C) 27 and 54 done clear
D) 8 and 18 done clear
View Solution play_arrowA) 1 done clear
B) 2 done clear
C) 9 done clear
D) 3 done clear
View Solution play_arrowquestion_answer30) What type of numbers are 21 and 31?
A) Prime done clear
B) Composite done clear
C) Coprime done clear
D) Twin prime done clear
View Solution play_arrowquestion_answer31) Which number fills the blank?
11 and ____ are coprime numbers. 
A) 11 done clear
B) 88 done clear
C) 143 done clear
D) 13 done clear
View Solution play_arrowquestion_answer32) What is the sum of prime numbers between 20 and 30?
A) 50 done clear
B) 23 done clear
C) 52 done clear
D) 51 done clear
View Solution play_arrowquestion_answer33) Find the missing number.
Every prime number except ____ is odd. 
A) 1 done clear
B) 3 done clear
C) 2 done clear
D) 0 done clear
View Solution play_arrowquestion_answer34) Find the even number immediately after 17599.
A) 17590 done clear
B) 17560 done clear
C) 17600 done clear
D) 18600 done clear
View Solution play_arrowquestion_answer35) Which among the following is a composite number?
A) 17 done clear
B) 19 done clear
C) 21 done clear
D) 23 done clear
View Solution play_arrowquestion_answer36) What is the sum of the least prime number and the least composite number?
A) 1 done clear
B) 2 done clear
C) 6 done clear
D) 4 done clear
View Solution play_arrowquestion_answer37) Which of the following is the greatest prime number less than 100?
A) 97 done clear
B) 99 done clear
C) 93 done clear
D) 100 done clear
View Solution play_arrow Direction: The given incomplete table shows the number of pencils sold in two shops A and B in a week.

A) 12 done clear
B) 28 done clear
C) 16 done clear
D) 24 done clear
View Solution play_arrow Direction: The given incomplete table shows the number of pencils sold in two shops A and B in a week.

A) Thursday, Wednesday done clear
B) Wednesday, Thursday done clear
C) Tuesday, Wednesday done clear
D) Wednesday, Tuesday done clear
View Solution play_arrow Direction: The given incomplete table shows the number of pencils sold in two shops A and B in a week.

A) 18 done clear
B) 6 done clear
C) 12 done clear
D) 24 done clear
View Solution play_arrowquestion_answer41) What is the prime factorization of 24?
A) \[\text{2}\times \text{3}\times \text{4}\] done clear
B) \[~\text{2}\times \text{2}\times \text{2 }\times \text{3}\] done clear
C) \[~\text{6}\times \text{4}\] done clear
D) \[\text{8}\times \text{3}\] done clear
View Solution play_arrowquestion_answer42) The table lists the number of factors for some numbers.
Number  Number of factions 
21  4 
23  2 
25  3 
27  4 
29  2 
A) 0 done clear
B) 2 done clear
C) 3 done clear
D) 4 done clear
View Solution play_arrowquestion_answer43) Find a number which is a multiple of all the numbers from 1 to 10?
A) 5040 done clear
B) 1260 done clear
C) 720 done clear
D) 1440 done clear
View Solution play_arrowA) 121 done clear
B) 81 done clear
C) 100 done clear
D) 64 done clear
View Solution play_arrowquestion_answer45) How many factors does 48 have?
A) 2 done clear
B) 4 done clear
C) 6 done clear
D) 10 done clear
View Solution play_arrowquestion_answer46) Identify a suitable statement for the given blank.
A prime number has_________. 
A) 0, 2, 4, 6 or 8 in its ones place. done clear
B) 1, 3, 5, 7 or 9 in its ones place. done clear
C) 2 factors only. done clear
D) 2 multiples only. done clear
View Solution play_arrowA) 80 done clear
B) 40 done clear
C) 16 done clear
D) 10 done clear
View Solution play_arrowA) 999 done clear
B) The greatest 3 digit number. done clear
C) Either (A) or (B). done clear
D) The smallest 3digit number. done clear
View Solution play_arrowquestion_answer49) Find a factor of the number shown on the spike abacus.
A) 8 done clear
B) 7 done clear
C) 5 done clear
D) 9 done clear
View Solution play_arrow1  ?  3 
A) 2 done clear
B) 4 done clear
C) 6 done clear
D) 8 done clear
View Solution play_arrowA) 15 done clear
B) 12 done clear
C) 18 done clear
D) 6 done clear
View Solution play_arrowquestion_answer52) What is the product of the first three common multiples of 5 and 10?
A) 6000 done clear
B) 600 done clear
C) 2000 done clear
D) 3000 done clear
View Solution play_arrowquestion_answer53) How many prime numbers are there from 50 to 70?
A) 2 done clear
B) 3 done clear
C) 4 done clear
D) 5 done clear
View Solution play_arrowquestion_answer54) Find the prime number from the following
A) 17 done clear
B) 28 done clear
C) 39 done clear
D) 4 done clear
View Solution play_arrowA) 2 done clear
B) 0 done clear
C) 4 done clear
D) 1 done clear
View Solution play_arrowquestion_answer56) Which of the following is a multiple of 6 and 9?
A) 138 done clear
B) 168 done clear
C) 108 done clear
D) 48 done clear
View Solution play_arrowquestion_answer57) What is the sum when 11 is added to the next prime number?
A) 23 done clear
B) 13 done clear
C) 24 done clear
D) 25 done clear
View Solution play_arrowquestion_answer58) What is the smallest number that must be added to 7260 to make it divisible by 9?
A) 6 done clear
B) 4 done clear
C) 5 done clear
D) 3 done clear
View Solution play_arrowquestion_answer59) Which of the following is a pair of prime numbers whose sum is 9?
A) 2, 7 done clear
B) 5, 4 done clear
C) 3, 6 done clear
D) 1, 8 done clear
View Solution play_arrowA) 3699 done clear
B) 3996 done clear
C) 4734 done clear
D) 4374 done clear
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