Question
When 16 years is subtracted from the present age of A
and the obtained result is divided by 3, then the present age of his nephew is obtained. If the present age of his nephew is 4 years less than the present age of Aβs son who is 16 years old, then find the present age of A.Solution
Let the Present age of A be βxβ years Present age of his nephew = 16 β 4 = 12 years Therefore, {(x β 16)/3} = 12 Or, x β 16 = 36 Or, x = 52 Therefore, present age of A = 52 years
There are 5 Red caps, 3 Green caps and 2 Blue caps in a box. 4 caps are chosen at random. What is the probability of their being 2 Red and 2 Blue caps?
A bag contains 5 red, 4 green, and 3 blue balls. What is the probability of drawing a green ball?
If three socks are chosen at random, what is the probability that all are blue socks?
A bag contains 9 black and 10 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
Tom and Jerry throw alternatively a pair of dice. Tom wins if he throws 8 before Jerry throws 7 and Jerry wins if he throws 7 before Tom throws 8. Find...
A bag contains 6 balls of which 3 are red and 3 are black. They are drawn successively without replacement. What is the probability that colors are alt...
There are three boxes βAβ, βBβ and βCβ. Box βAβ contains 6 black and 12 white cubes, box βBβ contains 6black, and 8 white cubes and ...
A box contains 8 yellow marbles, βxβ blue marbles and 12 white marbles. A box contains 5 yellow marbles, 2 blue marbles and 3 white marbles. The pro...
Given that E and F are events such that P(E) = 0.8, P(F) = 0.4 and P(Eβ© F) = 0.2. Find P(F|E).
If a coin is tossed 10 times then what is the probability of getting three heads?