# Mathematics Quiz For RRB NTPC : 31st December

Q1. The length of the two parallel sides of a trapezium are 16 m and 20 m respectively. If its height is 10 m, its area in square metres is?
(a) 360
(b) 260
(c) 240
(d) 180

Q2. A discount series of 15%, 20% and 25% is equal to the single discount of?
(a) 48%
(b) 49%
(c) 50%
(d) 51%

Q3. The value of (ds+t ÷ ds) ÷ dt would be?
(a) d2(s+t)
(b) 1
(c) 0
(d) ds–t

Q4. Possible measures of three angles of a triangle are?
(a) 33°, 42°, 115°
(b) 40°, 70°, 80°
(c) 30°, 60°, 100°
(d) 50°, 60°, 70°

Q5. If in a triangle ABC, Sin A = Cos B then the value of Cos C is:

Q6. A sphere of radius 5 cm is melted to form a cone with base of same radius. The height (in cm) of the cone is:
(a) 5
(b) 10
(c) 20
(d) 22

Q7. If the sum of a number and its reciprocal be 2, then the number is
(a) 0
(b) 1
(c) – 1
(d) 2

Q8. The area of a rectangle in 60 cm2 and its perimeter is 34 cm, then the length of the diagonal is:
(a) 17 cm
(b) 11 cm
(c) 15 cm
(d) 13 cm

Q9. A moving train passes a platform 50m long in 14 seconds and a lamp post in 10 seconds. The speed of the train (in km/h) is:
(a) 24
(b) 36
(c) 40
(d) 45

Q10. An angle in a semicircle is:
(a) 45°
(b) 60°
(c) 90°
(d) 120°

#### Solutions:

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