Mathematics Quiz For RRB NTPC : 26th November

Q1. The difference between the greatest and least five digit numbers formed by the digits 2, 5, 0, 6, 8 is (repetition of digits are not allowed)
(a) 69552
(b) 65925
(c) 65952
(d) 63952

Q2. The price of a shirt after 15% discount, is Rs.119. What was the marked price of the shirt before discount
(a) Rs. 129
(b) Rs. 140
(c) Rs. 150
(d) Rs. 160

(a) 0
(b) 1
(c) 2
(d) – 1

Q4. The average of a, b, c is 20 and that of b, c, d is 25; if d = 30, then the value of a is:
(a) 25
(b) 45
(c) 30
(d) 15

Q5. A store sells a watch for a profit of 25% of the cost. Then the percentage of profit against selling price is:
(a) 22%
(b) 20%
(c) 18%
(d) 15%

Q6. If A is equal to 20% of B and B is equal to 25% of C; then what percent of C is equal to A?
(a) 10
(b) 15
(c) 5
(d) 20

Q7. A gun is fired at a distance of 1.7 km from Ram and he hears the sound after 25 seconds. The speed of sound in meter per second is:
(a) 60
(b) 62
(c) 64
(d) 68

Q8. A sum of Rs. 3000 yields an interest of Rs. 1080 at 12% per annum simple interest in how many years?
(a) 4 Years
(b) 3 Years
(c) 5 years
(d) 2 1/2 years


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