# SSC CHSL Important Questions on Number System with Solution

Here are some important and previous year question of SSC CHSL of Number System along with Solution.

1) A number x when divided by 289 leaves 18 as the remainder. The same number when divided by 17 leaves y as a remainder. The then the value of y is

A 2
B 3
C 1
D 5

2) In the following number series a wrong number is given. Find out that number.
8, 18, 40, 86, 178, 370, 752
A 178
B 180
C 128
D 156

3) Find the unit digit in the product .

4387²⁴⁵ × 621⁷²

A 1
B 2
C 5
D 7

4) When a number is increased by 24, it becomes 110% of itself. What is the number?
A 288
B 360
C 216
D 240

5) Three consecutive natural numbers are such that the square of the greatest is greater than the product of the other two by 16. The smallest of these numbers is
A 5
B 6
C 7
D 4

6) How many numbers are there from 300 to 650 which are completely divisible by both 5 and 7?
A 8
B 9
C 10
D 12

7) The sum of a non-zero number and twenty times its reciprocal is 9. What is the number?
A -5
B 3
C -3
D 5

8) If 49 is subtracted from the square of a number, then the result obtained is 576. What is the number?
A 24
B 25
C 23

D 27

9) 3¹¹ +3¹² +3¹³ +3¹⁴ is divisible by

A 7
B 8
C 11
D 14

10) If upto 60 terms, then what is the value of ?
A -360
B -310
C -240
D -270

11) The sum of series 1+2+3+4+……..998+999+1000

A) 5050
B) 500500
C)5500000
D)55000