Number System Questions and Answers
When a number is divided by 192 the remainder is 54. What will be the remainder when the same number is divided by 16?
(A) 2
(B) 4
(C) 6
(D) 8
Correct Answer : C
If the 8 digit number 789x531y is divisible by 72, then the value of (5x - 3y) will be?
(A) 0
(B) -1
(C) 2
(D) 1
Correct Answer : B
1! + 2! + 3! + 4! + ......... + 50! Find the unit digit of?
(A) 1
(B) 3
(C) 5
(D) 8
Correct Answer : B
In the number 15!/100, which digit will be in the unit's place?
(A) 5
(B) 7
(C) 3
(D) 0
Correct Answer : D
The smallest number, which when added to 680621 gives the sum a perfect square number, will be
(A) 25
(B) 36
(C) 45
(D) None
Correct Answer : D
The smallest positive integer, which when multiplied by 392 gives the product a perfect square number, will be :
(A) 5
(B) 6
(C) 7
(D) None
Correct Answer : D
In a group of 35 people, 23 of them like coffee, 24 of them like tea and each person likes at least one of the drinks. How many like both?
(A) 12
(B) 35
(C) 47
(D) 6
Correct Answer : A
There are some friends, all less than 20 years. When paired amongst themselves they realize that the sum of their ages is a multiple of 5. If their ages are distinct prime numbers, then the number of possible pairs are:
(A) 7
(B) 5
(C) 8
(D) 6
Correct Answer : A
Find the solution of 5x-7=12?
(A) 4.8
(B) 1
(C) 3.8
(D) 2.8
Correct Answer : C
The sum of the two - digit number is 6 and the number and its flip (digits written in reverse order) both are multiples of 3. If the difference between them is 36, then which of the following is the required number and its flip?
(A) 51 or 15
(B) 42 or 24
(C) 33 or 33
(D) 60 or 06
Correct Answer : A
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Rajesh Bhatia
A Writer, Teacher and GK Expert. I am an M.A. & M.Ed. in English Literature and Political Science. I am highly keen and passionate about reading Indian History. Also, I like to mentor students about how to prepare for a competitive examination. Share your concerns with me by comment box. Also, you can ask anything at linkedin.com/in/rajesh-bhatia-7395a015b/.
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