# 10 Important MCQ on Number System (Part-1) For SBI Clerical Canara Bank PO DMRC Railway Exam 2018

**1. Five-eighth of three-tenth of four-ninth of a number is 45. What is the number?**

(a) 470

(b)550

(c)560

(d)540

**2. Which of the following numbers should be added to 11158 to make it exactly divisible by 77?**

(a) 9

(b) 8

(c)6

(d)7

**3. If n is odd, (11)n + 1 is divisible by:**

(a) 11 + 1

(b)11 – 1

(c) 11

(d) 10 + 1

**4. Find unit digit in (515)31 + (515)90:**

(a) 0

(b) 5

(c) 1

(d) 4

**5. The number 899 is:**

(a) a number with 5 factors

(b) a number with 4 factors

(c) a number with more than 4 factors

(d) a perfect cube

**6. The least number to be added to 3545 so that 65 divides the result exactly is:**

(a) 50

(b) 40

(c) 30

(d) 20

**7. Find the number which when multiplied by 13 is increased by 180:**

(a) 20

(b) 15

(c) 12

(d) 5

**8. Find the number of divisors of 10800.**

(a) 57

(b) 60

(c) 72

(d) 62

**9. The sum of the digits in a two-digit number is 5. If 9 is subtracted from the number, the result is the number with the digits reversed. The number is:**

(a) 23

(b) 24

(c) 41

(d) 32

**10. Three consecutive numbers such that twice the first, 3 times the second and 4 times the third together make 182. The numbers in question are:**

(a) 18, 22 and 23

(b) 18, 19 and 20

(c) 19, 20 and 21

(d) 20, 21 and 22