Math Questions for SSC CHSL and RRB NTPC EXAM

January 13, 2017 Share Like Labels: ssc

Q2. The perimeter of five squares are 24 cm, 32 cm, 40 cm, 76 cm and 80 cm respectively. The perimeter of another square equal in area to sum of the areas of these squares is
(a) 31 cm
(b) 62 cm
(c) 124 cm
(d) 961 cm

Q3. In ∆ABC,AB+BC=12 cm, BC+CA=14 cm and CA+AB= 18. Accordingly what will be the radius of that circle whose parimeter is equal to that of the triangle?
(a) 5/2
(b) 7/2
(c) 9/2
(d) 11/2

Q4. A train covers a certain distance in 210 minutes at a speed of 60 kmph. The time taken by the train, to cover the same distance at a speed of 80 kmph is:
(a) 3 (5/8) hours
(b) 2 (5/8) hours
(c) 4 (5/8) hours
(d) 3 hours

Q5. The base of a solid right prism is a triangle whose sides are 9 cm, 12 cm and 15 cm. The height of the prism is 5 cm. Then, the total surface area of the prism is
(a) 180 cm^2
(b) 234 cm^2
(c) 288 cm^2
(d) 270 cm^2

Q7. From a point P on the ground the angle of elevation of the top of a 10 m tall building is 30°. A flag is hoisted at the top of the building and the angle of elevation of the top of the flagstaff from P is 45°. Find the length of the flagstaff (take√3=1.732)

(a) 10(√30+2) m

(b) 10(√30-1) m

(d) 7.32 m

Q8. A number N is divided into three parts in such a way that the sum of first two parts is equal to K% of third part. Find the third part.

(a) 10N/(K+100)

(b) 100N/(K+100)

(d) 100N/(K-100)

Q9. By selling an article at 3/4th of the marked price, there is a gain of 25%. The ratio of the marked price and the cost price is

(a) 5 : 3

(b) 3 ; 5

(d) 4 : 3

Q10. A cyclic quadrilateral ABCD is such that AB = BC, AD = DC, AC ⊥ BD, ∠CAD=θ, then the angle ∠ABC = ?

(a) θ

(b) θ/2

(d) 3 θ

Q11. Water flows through a cylindrical pipe. Whose radius is 7 cm, at 5 metre per second. The time, it takes to fill an empty water tank with height 1.54 metres and area of the base (3 × 5) square metre, is (take π= 22/7)

(a) 6 minutes

(b) 5 minutes

(d) 9 minutes

Q14. The average age of boys in the class is twice the number of girls in the class. The ratio of boys and girls in the class of 50 is 4 : 1. The total of the ages (in years) of the boys in the class is

(a) 2000

(b) 2500

(d) 400

Q15. A man could see only 50 meters in fog. He was walking at an average speed of 4 km/hr and saw a train coming behind him. The train was 20 meters in length and disappeared after 30 seconds. Find the speed of the train?

(a) 18 (2/5) km/hr

(b) 6 (3/5 )km/hr

(d) 4 (2/5) km/hr