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If 40% of a number is equal to two-thirds of another number, what is the ratio of the first number to the second number?
A2 : 5
B3 : 5
C5 : 3
D5 : 2
A boat can travel 15 km downstream in 30 minutes. If the speed of the stream is 5 km/h, find the speed of the boat in still water.
A20 km/h
B25 km/h
C30 km/h
D35 km/h
What is the probability of getting at least one head when three unbiased coins are tossed together?
A1/8
B3/8
C7/8
D3/4
The base and height of a triangle are in the ratio 3:2 and its area is 108 cm². Find its height.
A12 cm
B14 cm
C16 cm
D18 cm
The lengths of two parallel sides of a trapezium are 10 cm and 16 cm, and the distance between them is 8 cm. What is its area?
A104 cm²
B112 cm²
C120 cm²
D128 cm²
A sum of Rs. 8,000 amounts to Rs. 9,261 in 3 years at compound interest. What is the rate of interest per annum?
A4%
B5%
C6%
D8%