Question

A box contains 100 cards which are numbered from 1to100 if one card is drawn at random from the box find the probability that it bears a two digits number aperfct square number a multiple of 5 and a number divisible by 10

Answer 1

.The total outcomes is 100.
the probability of getting a two digit no. is 90/100 =9/10.
the probability of getting a perfect square is 10/100=1/10
probability of getting a two digit perfect square is 6/100= 3/50
probability of getting a multiple of 5 is 20/100=1/5
probability of getting a number divisible by 10 is 10/100=1/10.
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