Practice MCQ Questions and Answer on Number System

11.

How many of the following numbers are divisible by 132 ?
264, 396, 462, 792, 968, 2178, 5184, 6336

(A) 4
(B) 5
(C) 6
(D) 7

12.

What is the value of x so that the seven digit number 8439x53 is divisible by 99?

(A) 9
(B) 4
(C) 3
(D) 6

13.

A two digit number ab is added to another number ba, which is obtained by reversing the digits then we get three digit number. Thus (a + b) equals to:

(A) at least 18
(B) 2ab
(C) 2(a + b)
(D) (a + b) ≥ 10

14.

Which of the following numbers are completely divisible by 7 ?
I. 195195
II. 181181
III. 120120
IV. 891891

(A) Only I and II
(B) Only II and III
(C) Only I and IV
(D) Only II and IV

15.

Twenty one times of a positive number is less than its square by 100. The value of the positive number is:

(A) 25
(B) 26
(C) 42
(D) 41

16.

A number when divided by 91 gives a remainder 17. When the same number is divided by 13. The remainder will be -

(A) 0
(B) 4
(C) 6
(D) 3

Solution: $\begin{aligned} \frac{remainder of number}{13} = \frac{17}{13} \\ \Rightarrow Remainder = 4 \end{aligned}$

17.

The sum of two numbers is 18. The greatest product of these two number can be:

(A) 17
(B) 81
(C) 80
(D) Can't determined

18.

When 12, 16, 18, 20 and 25 divide the least number x, the remainder in each case is 4 but x is divisible by 7. What is the digit at the thousand's place in x?

(A) 4
(B) 3
(C) 5
(D) 8

Solution: LCM of 12, 16, 18, 20, 25 = 3600 For remainder 4 = 3600k + 4 If divisible by 7 $= \frac{7 \times 514 k + 2 k + 4}{7}$ $\frac{2 k + 4}{7},$ If k = 5 divisible x = 3600 × 5 + 4 = 18000 + 4 $= \underset{8}{\underset{↓}{18004}}$

19.

Sunny gets $\frac{7}{9}$ times as many marks in QA as in ENGLISH. If his total combined marks in both the papers is 90. His marks in QA is:

(A) 50
(B) 60
(C) 70
(D) 80

Solution: $\begin{aligned} Total Marks = 90 \\ Marks in QA = \frac{7}{9} of 90 \\ = \frac{(7 \times 90)}{9} \\ = 7 \times 10 \\ = 70 \end{aligned}$

20.

If p is a prime number greater than 3, then (p² - 1) is always divisible by :

(A) 6 but not 12
(B) 12 but not 24
(C) 24
(D) None of these

«
1
2
3
4
5
6
7
8
9
10
...
67
68
Next ›
Last »

Indian Polity Mcq IAS GK Question India GK World GK GK questions GK Quiz Biology GK Science GK Physics GK Chemistry GK General Awareness Computer GK Political GK Indian Political GK Economics GK History GK Sports GK Geography GK Teaching Aptitude GK CTET/TET GK B Ed Entrance GK Banking GK SSC GK UPSC GK Indian Army GK Hindi Grammar GK Hindi Grammar MCQ Reasoning questions Bihar GK Rajasthan GK Jharkhand GK MP GK UP GK Chhattisgarh GK Haryana GK HP GK Maharashtra GK Electronics GK Agriculture GK States/Capitals GK Books Name & Author Arthimetic Verbal Reasoning Non Verbal Reasoning English

Practice MCQ Questions and Answer on Number System

General Knowledge