1961.
If three spheres of radius 75 cm, 60 cm and 45 cm are melted into one big sphere, then the radius of the big sphere is:
(A)
90 cm
(B)
85 cm
(C)
95 cm
(D)
80 cm
1962.
Two parallel chords are drawn in a circle of radius 25 cm. The distance between the two chords is 27 cm. If the length of one
chord is 48 cm, then length of the other chord is equal to:
(A)
42 cm
(B)
36 cm
(C)
48 cm
(D)
30 cm
1963.
Find the percentage increase in surface area of a cube by triple each side.
(A)
800%
(B)
650%
(C)
700%
(D)
500%
1964.
After the division of a number successively by 2,3 and 5, the remainders are 1,2 and 3, respectively. What will be the
remainder, if 13 divides the same number (if the last quotient is 1)?
(A)
1
(B)
2
(C)
0
(D)
3
1965.
A motorcyclist rides his motorcycle at a speed of 90 km/hr in the first one hour and the next two hours at a speed of 120
km/hr. Find the average speed of the rider.
(A)
110 km/hr
(B)
120 km/hr
(C)
105 km/hr
(D)
115 km/hr
1966.
The perpendicular length from the origin to the line 6x + 8y - 48 = 0 is:
(A)
2.6 unit
(B)
4.8 unit
(C)
8.3 unit
(D)
5.2 unit
1967.
In an assembly election, a candidate got 60% of the total valid votes. 3% of the total votes were declared invalid. If the total
number of voters is 2,40,000, then find the number of valid votes polled in favour of the candidate.
(A)
193680
(B)
139680
(C)
139860
(D)
139608
1968.
If the ratio of principal and simple interest for 5 years is 10 : 7, then the rate of interest per annum is:
(A)
10%
(B)
15%
(C)
14%
(D)
11%
1969.
What is the area (in cm2) of an equilateral triangle whose perimeter is 24 cm?
Note: Round off to the nearest two decimal places.
(A)
28.14
(B)
27.71
(C)
13.86
(D)
27.14
1970.
A train 550 metres long is running at a speed of 78 km/h. How many seconds will it take to cross a 350 metres long train
running in the opposite direction at a speed of 30 km/h?
