RRB NTPC SAMPLE PAPER - ARITHMETIC - 236

RRB NTPC SAMPLE PAPER - ARITHMETIC - 236

1. A shopkeeper marks his goods 20% above cost price, but allows 30% discount for cash. His net loss is:

(a) 8%
(b) 10%
(c) 16%
(d) 20%

2. The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is :

(a) 45%
(b) 50%
(c) 51.4% approx.
(d) 54.6% approx.

3. A cricketer whose bowling average is 24.85, runs per wicket, takes 5 wickets for 52 runs and thereby decreases his average by 0.85. The number of wickets taken by him till the last match was:

(a) 64
(b) 72
(c) 80
(d) 96

4. The sum and product of two numbers are 12 and 35 respectively. What will be the sum of their reciprocals?

(a) 1/3
(b) 1/5
(c) 12/35
(d) 35/12

5. Which of the following is a perfect square as well as a cube?

343, 125, 81, or 64

(a) 81
(b) 125
(c) 343
(d) 64

Railway Recruitment Board (RRB) NTPC Exams Study Kit

Answer:

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