-
question_answer1)
Which among the following statements is incorrect?
A)
Multiplicative inverse of 0 is not defined. done
clear
B)
Every rational has a reciprocal. done
clear
C)
The product of a non- zero rational number and its reciprocal is 1. done
clear
D)
The idea of mean helps us to find rational numbers between two given rational numbers. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer2)
If 24 shirts of equal size can be made out of 30m of cloth, how much cloth is required for making 17 shirts?
A)
\[22.25\text{ }m\] done
clear
B)
\[21.25\text{ }m\] done
clear
C)
\[24.45\text{ }m\] done
clear
D)
\[26.45\text{ }m\] done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer3)
Identify the rational number which does not belong with the other three.
A)
\[\frac{-4}{5}\,\] done
clear
B)
\[\,\frac{-3}{7}\] done
clear
C)
\[\frac{-2}{9}\,\] done
clear
D)
\[\frac{9}{-11}\] done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer4)
Which among the following statements is incorrect for any three numbers m, n and p?
A)
lf \[m>n\]and \[p<n\]then \[p>m\] done
clear
B)
if \[m>n\] and \[p~\ne 0\]then \[m+p>n+p\] done
clear
C)
If \[m>n\] and \[n>p\]then \[m>p\] done
clear
D)
If \[m>n\] and \[p<0\]then \[mp>np\] done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer5)
Every composite number has _______
A)
three factors done
clear
B)
atleast two factors done
clear
C)
atleast three factors done
clear
D)
more than three factors done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer6)
Which among the following number is not divisible by 182?
A)
309400 done
clear
B)
993720 done
clear
C)
159562 done
clear
D)
527800 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer7)
A perfect number is the number for which sum of all its factors is equal to_____
A)
one less than twice the number done
clear
B)
one more than twice the number done
clear
C)
twice the number done
clear
D)
one less than twice the number done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer8)
Which among the following is not a rational number between\[\frac{9}{-23}\,and\,\frac{-7}{9}\]?
A)
\[\frac{-121}{207}\] done
clear
B)
\[\frac{-80}{207}\] done
clear
C)
\[\frac{-160}{207}\] done
clear
D)
\[\frac{-306}{414}\] done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer9)
If\[{{2}^{n}}-1\]is a prime number , then \[{{2}^{n}}^{-1}\left( {{2}^{n}}-1 \right)\] is_____
A)
a prime number done
clear
B)
a super number done
clear
C)
a perfect number done
clear
D)
an odd number done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer10)
Which among the following is not a perfect number?
A)
6 done
clear
B)
28 done
clear
C)
496 done
clear
D)
120 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer11)
Find the unit's digit in the product of the first 100 odd natural numbers.
A)
0 done
clear
B)
1 done
clear
C)
3 done
clear
D)
5 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer12)
Which among the following pair of numbers is not twin primes?
A)
13 and 11 done
clear
B)
5 and 7 done
clear
C)
29 and 23 done
clear
D)
3 and 5 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer13)
Which among the following pair of numbers are co-primes?
A)
204 and 189 done
clear
B)
10353 and 1073 done
clear
C)
3553 and 1755 done
clear
D)
2233 and 3689 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer14)
How many composite numbers are there in between 150 and 200 (including 150 and 200 both)?
A)
40 done
clear
B)
42 done
clear
C)
41 done
clear
D)
39 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer15)
The HCF and LCM of two numbers are 16336 respectively. If one of them is 48, then find the other.
A)
116 done
clear
B)
112 done
clear
C)
118 done
clear
D)
158 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer16)
If 3a52895b7 is exactly divisible by 3 and 11 both, then find the value of a + b. (where a and b are digits from 0 to 9.)
A)
6 done
clear
B)
9 done
clear
C)
12 done
clear
D)
15 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer17)
Find the LCM of the least 4-digit number and the greatest 4-digit even number.
A)
9998000 done
clear
B)
4567800 done
clear
C)
4999000 done
clear
D)
260000 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer18)
The greatest five digit number exactly divisible by 7 and 23 both is____
A)
99995 done
clear
B)
99981 done
clear
C)
99974 done
clear
D)
99988 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer19)
How many pairs of co-primes can be formed from the set \[\left\{ 2,\text{ }5,\text{ }6,\text{ }7,\text{ }8,\text{ }9,\text{ }12 \right\}\]
A)
14 done
clear
B)
13 done
clear
C)
12 done
clear
D)
18 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer20)
Find the unit's digit in the product of the first 50 even natural numbers.
A)
2 done
clear
B)
4 done
clear
C)
6 done
clear
D)
0 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer21)
How many prime numbers are of the form 3m+2, where\[1\le m\le 20\]?
A)
6 done
clear
B)
7 done
clear
C)
8 done
clear
D)
9 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer22)
If the eight digit number 28357a59 is exactly divisible by 111, then find the least possible value of a.
A)
0 done
clear
B)
1 done
clear
C)
2 done
clear
D)
3 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer23)
How many different positive integers are there in between\[{{10}^{5}}and\text{ }{{10}^{6}}\], the sum of whose digits is equal to 2?
A)
5 done
clear
B)
6 done
clear
C)
8 done
clear
D)
11 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer24)
The greatest number, which leaves remainders 3 and 5 on dividing 523 and 429 respectively, is_____
A)
6 done
clear
B)
12 done
clear
C)
8 done
clear
D)
14 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer25)
Find the sum of \[3\,.\,3\,3\,3\,3\,3\,3\,........\]\[+\text{ }5\,.\,5\,5\,5\,5\,5\,5\,5\,5...........\]
A)
\[\frac{80}{9}\] done
clear
B)
\[\frac{80}{11}\] done
clear
C)
\[\frac{70}{9}\] done
clear
D)
\[\frac{88}{10}\] done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer26)
How many factors of \[{{2}^{6}}\times \text{ }{{3}^{7}}\times \text{ }{{5}^{3}}\] are perfect squares?
A)
32 done
clear
B)
16 done
clear
C)
64 done
clear
D)
28 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer27)
Find the multiplicative inverse of\[(a+2)+\frac{4}{(a-2)}\].
A)
\[\frac{a}{\left( a+2 \right)}\] done
clear
B)
\[\frac{{{a}^{2}}}{a-2}\] done
clear
C)
\[\frac{\left( a-2 \right)}{{{a}^{2}}}\] done
clear
D)
\[\frac{a}{\left( a-2 \right)}\] done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer28)
If * 35624 is divisible by 11, then the value of * is ____
A)
3 done
clear
B)
4 done
clear
C)
6 done
clear
D)
8 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer29)
The product of three consecutive natural numbers will be divisible by ___
A)
3 done
clear
B)
9 done
clear
C)
15 done
clear
D)
6 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer30)
The sum of digits of a two digit number is 7 and their product is 12, what will be the difference of two digits?
A)
4 done
clear
B)
1 done
clear
C)
2 done
clear
D)
3 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer31)
The unit digit of \[{{\left( 8127 \right)}^{173}}\] is _____
A)
1 done
clear
B)
9 done
clear
C)
3 done
clear
D)
7 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer32)
Simplify: \[\frac{{{(539+733)}^{2}}+{{(733-539)}^{2}}}{733\times 733+539\times 539}\]
A)
1 done
clear
B)
1466 done
clear
C)
1078 done
clear
D)
2 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer33)
The difference of squares of two consecutive numbers is 31. The numbers are _____
A)
16 and 18 done
clear
B)
16 and 17 done
clear
C)
15 and 16 done
clear
D)
17 and 18 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer34)
The unit digit of \[({{7}^{95}}-{{3}^{58}})\] is____
A)
7 done
clear
B)
1 done
clear
C)
4 done
clear
D)
9 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer35)
Choose the greatest number among the following:
A)
\[{{\left[ {{(3+3)}^{2}} \right]}^{2}}\] done
clear
B)
\[{{\left[ 3\times 3\times 3 \right]}^{2}}\] done
clear
C)
\[{{\left[ 3\div 3+3 \right]}^{3}}\] done
clear
D)
\[{{3}^{3}}+{{3}^{3}}\] done
clear
E)
\[{{\left[ {{3}^{2}}+{{3}^{2}} \right]}^{3}}\] done
clear
View Solution play_arrow
-
question_answer36)
If the sum of two numbers a and b is equal to double of a, then value of b will be ________
A)
greater than a done
clear
B)
less than a done
clear
C)
equal to a done
clear
D)
more than 10 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer37)
The least square number which is divisible by 8, 12 and 16 is _____
A)
256 done
clear
B)
324 done
clear
C)
144 done
clear
D)
288 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer38)
In a question of division, divisor is 9, Quotient is 114 and remainder is 5, then the dividend is _______
A)
1121 done
clear
B)
1331 done
clear
C)
1031 done
clear
D)
1271 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer39)
If a positive integer is multiplied by 4, then the product is equal to the cube of that integer. Find the integer.
A)
16 done
clear
B)
54 done
clear
C)
2 done
clear
D)
128 done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer40)
lf \[\frac{1}{3.618}=0.2764\] then the value of \[\frac{1}{0.0003618}\]is equal __________
A)
\[276.4\] done
clear
B)
\[2764\] done
clear
C)
\[27.64\] done
clear
D)
\[2.764\] done
clear
E)
None of these done
clear
View Solution play_arrow