RRB NTPC SAMPLE PAPER - ARITHMETIC - 168

1. (64) - 2/3 x (1/4)^-2 is equal to :

(a) 1
(b) 2
(c) 1/2
(d)1/16

2. The H.C.F. of two numbers is 8. Which one of the following can never be their L.C.M.?

(a) 24
(b) 48
(c) 56
(d) 60

3. If the sum of two numbers is 22 and the sum of their squares is 404, then the product of the numbers is:

(a) 40
(b) 44
(c) 80
(d) 88

4. 1/0.04 is equal to:

(a) 1/40
(b) 2/5
(c) 5/2
(d) 25

5. If 1 × 2 × 3 × ... × n is denoted by ∟n, then ∟8 - ∟7 - ∟6 is equal to:

(a) 6 × 8 ×∟6
(b) 7 × 8 × ∟6
(c) 6 × 7 × ∟8
(d) 7 × 8 × ∟7

Railway Recruitment Board (RRB) NTPC Exams Study Kit

Answer:

1. (a) 2. (d) 3. (a) 4. (d) 5. (a)