Number System Questions With Solutions Q No 21 to Q No 40
In this post, you will get some important Number System Questions with Solutions Q No 21 To Q No 40. Questions will be solved soon.
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Ques No 21:
An Integer is multiplied by 2 and the result is then multiplied by 5. The final result could be
Options:
A. 64
B. 32
C. 12
D. 30
Solution:
Ques No 22:
If p, q, r, s and t real numbers such that r <s, t < q, q > p and t < r, which of these numbers is greatest
Options:
A. t
B. s
C. r
D. q
Solution:
Ques No 23:
The number N = 173889 is a perfect square. The sum of the digits in
Options:
A. 12
B. 7
C. 14
D. 9
Solution:
Ques No 24:
What is the value of M and N respectively if M39048458N is divisible by 8 and 11, where M and N are single digit integers?
Options:
A. 7, 8
B. 5, 4
C. 6, 4
D. 8, 6
Solution:
Ques No 25:
The different between two numbers in 2. Their product is 84 greatest than the square of the smaller number. The sum of the number is :
Options:
A. 164
B. 86
C. 84
D. 42
Solution:
Ques No 26:
If least prime factor of a number m Is 3 and least prime factor of another number n is 7, then Least prime factor of the number (m + n) is :
Options:
A. 2
B. 3
C. 5
D. 7
Solution:
Ques No 27:
A prime number is called a “Superprime” if doubling it, and then subtracting 1, result in another prime number. The number of Superprimes less then 15 is
Options:
A. 2
B. 3
C. 4
D. 8
Solution:
Ques No 28:
If x is a positive integer less than 100, the number of x which make an integer is:
Options:
A. 6
B. 7
C. 8
D. 9
Solution:
Ques No 29:
If N denotes the numbers of digits in the number (584).(286) then N equals
Options:
A. 83
B. 84
C. 85
D. 88
Solution:
Ques No 30:
The value of the digit d for which the number d456d is divisible by 18, is:
Options:
A. 3
B. 4
C. 6
D. 9
Solution:
Ques No 31:
Eighteen students participated in a table tennis contest. The students were divided into pairs numbered from 1 to 9. Even numbered pair consist of a boy and a girl and odd numbered pair consist of two boys. The number of boys participated in the contest is
Options:
A. 10
B. 12
C. 14
D. 11
Solution:
Ques No 32:
If n is a natural number then we define n! (pronounced as factorial n) to be the product n x (n – ) x (n – 2) x ……x 2 x 1. For example 4! = 4 x 3 x 2 x 1 = 24. If 6! = a! x b! where a > 1 and b > 1, then a + b is
Options:
A. 8
B. 7
C. 6
D. 5
Solution:
Ques No 33:
In the sequence …a, b, c, d, 0, 1, 1, 2, 3, 5, 8…. Each term is the sum of the two terms to its left. Find ‘a’.
Options:
A. -3
B. -1
C. 0
D. 1
Solution:
Ques No 34:
The positive integers A, B, A – B and A + B are all prime numbers. The sum of these four primes is
Options:
A. even
B. divisible by3
C. divisible by 5
D. prime
Solution:
Ques No 35:
If n is a positive integer, which one of the following numbers must have a remainder of 3 when divided by any of the numbers 4, 5 and 6?
Options:
A. 12n + 3
B. 24n + 3
C. 90n + 3
D. 120n + 3
Solution:
Ques No 36:
The digit at the 100th place in the decimal representation of 6/7, is
Options:
A. 1
B. 2
C. 4
D. 5
Solution:
Ques No 37:
The digit at the 100th place in the decimal representation of 6/7, is
Options:
A. 1
B. 2
C. 4
D. 5
Solution:
Ques No 38:
How many pairs of positive integer (n,m), with n m satisfy the equation 1/5 = 1/n + 1/m?
Options:
A. 1
B. 2
C. 3
D. 4
Solution:
Ques No 39:
A certain number when divided by 222 leaves a remainder 35, another number when divided by 407 leaves a remainder 47. What is the remainder when the sum of these two numbers is divided by 37?
Options:
A. 8
B. 9
C. 12
D. 17
Solution:
Ques No 39:
There is an N digit number (N > 1). If the sum of digits is subtracted from the numbers then resulting number will be divisible by
Options:
A. 7
B. 2
C. 11
D. 9
Solution:
Ques No 40:
Find the remainder when 231 is divided by 5
Options:
A. 4
B. 5
C. 3
D. 7
Solution: