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The median of 10 observations arranged in ascending order is 24. If two middle terms are (2x + 1) and (2x + 3), find x.
A10
B11
C12
D13
A card is drawn from a well-shuffled deck of 52 cards. What is the probability that it is a Face Card (Jack, Queen, King)?
A1/13
B3/13
C4/13
D1/4
A box contains 5 red and 5 blue balls. Two balls are drawn one by one WITH replacement. What is the probability that both are red?
A1/4
B1/2
C3/4
D1/5
What is the height of an equilateral triangle with side length 10 cm?
A5 cm
B5*sqrt(3) cm
C10*sqrt(3) cm
D15 cm
A sum of money quadruples (becomes 4 times) in 15 years at simple interest. What is the rate of interest per annum?
A15%
B20%
C25%
D30%
If the ratio of radii of two cylinders is 2:3 and their heights are in the ratio 5:3, find the ratio of their volumes.
A10 : 9
B20 : 27
C8 : 27
D15 : 16