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A 250 m long train crosses a platform 350 m long in 30 seconds. What is the speed of the train in km/h?
A60 km/h
B72 km/h
C80 km/h
D90 km/h
Find the volume of a sphere whose surface area is 616 cm². (Use pi = 22/7)
A1437.33 cm³
B1312.67 cm³
C1540.00 cm³
D1250.33 cm³
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
The product of two numbers is 2025 and their HCF is 15. What is their LCM?
A120
B135
C150
D165
The median of observations 11, 12, 14, 18, x+2, x+4, 30, 32, 35, 41 arranged in ascending order is 24. Find x.
A20
B21
C22
D23
Pipe A can fill a tank in 10 hours and Pipe B can empty it in 15 hours. How long will it take to fill the tank if both pipes are opened together?
A20 hours
B25 hours
C30 hours
D35 hours
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
A sum of money invested at compound interest amounts to Rs. 2,420 in 2 years and Rs. 2,662 in 3 years. Find the rate of interest per annum.
A8%
B9%
C10%
D12%