1981.
A solid copper sphere of radius 9 cm is drawn into a wire of radius 4 mm. Find the length of the wire.
(A)
60.75 m
(B)
70.25 m
(C)
65.25 m
(D)
20.75 m
1982.
The sum of two−digit number and the number obtained by interchanging the digit is 77. If the difference of digits is 1, then
the number is:
(A)
67
(B)
45
(C)
34
(D)
12
1983.
Raju spends 80% of his income. His income increased by 20%, while his spending rise by 10%. The percentage of increase
in his savings is:
(A)
(B)
(C)
(D)
1984.
A chord of length 12 units in a circle of radius 10 units is ______ units away from its centre.
(A)
8
(B)
9
(C)
10
(D)
6
1985.
An equal sum of money was lent to P and Q at 8.6% per annum for a period of 7 years and 8 years, respectively. If the
difference in interest paid by them was ₹172, then the sum lent to each was:
(A)
₹3,000
(B)
₹2,150
(C)
₹185
(D)
₹2,000
1986.
If a : b = 3 : 4, b : c = 2 : 3, and c : d = 5 : 6, then a : b : c : d is:
(A)
(B)
(C)
(D)
1987.
In triangle XYZ, XY = YZ and m∠X = 78°. Find the value of m∠Y.
(A)
28°
(B)
24°
(C)
34°
(D)
39°
1988.
∆ABC is similar to ∆DEF and the ratio of the area of triangle ABC to triangle DEF is 25 ∶ 144. If AB = p cm,AC = q cm and BC
= r cm,then DE = ?
(A)
(B)
(C)
(D)
1989.
Ravath had to sell vegetables worth ₹4,960 for ₹4,712 due to weather conditions. What is the loss percentage that he has
incurred?
(A)
20%
(B)
10%
(C)
5%
(D)
15%
1990.
The difference between 31% and 26% of votes for the same party at different places is 2350. What is 7% of those votes?
