Find the harmonic mean of 4 and 6.
A4.5
B4.8
C5.0
D5.2
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Archives: MCQs
If cos(theta) = 4/5, find the value of (1 – tan(theta)) / (1 + tan(theta)).
A1/7
B2/7
C3/7
D4/7
The ratio of the volumes of two cubes is 27 : 64. What is the ratio of their surface areas?
A3 : 4
B9 : 16
C27 : 64
D81 : 256
In how many years will a sum of money triple itself at 12.5% per annum simple interest?
A12 years
B14 years
C16 years
D18 years
The area of a rhombus is 120 cm² and one of its diagonals is 10 cm. Find the length of the other diagonal.
A12 cm
B20 cm
C24 cm
D30 cm
Find the remainder when x^3 – 3x^2 + 4x – 5 is divided by (x – 2).
A-1
B1
C3
D5
From a deck of 52 cards, two cards are drawn at random. What is the probability that both are Kings?
A1/221
B1/169
C2/221
D1/13
If A:B = 3:4, B:C = 8:9, and C:D = 15:16, find A:D.
A3 : 8
B5 : 8
C5 : 16
D9 : 16
A person sells two items at Rs. 990 each, gaining 10% on one and losing 10% on the other. What is his overall gain or loss percentage?
ANo gain no loss
B1% gain
C1% loss
D2% loss
A train 180 m long passes a telegraph pole in 9 seconds. What is its speed in km/h?
A54 km/h
B60 km/h
C72 km/h
D80 km/h