Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?
In a simultaneous throw of two dice, we have n(S) = (6 x 6) = 36.
n(E) = 27.
In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:
Let S be the sample space and E be the event of selecting 1 girl and 2 boys.
In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?
From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?
Let S be the sample space.
Let E = event of getting 2 kings out of 4.
Two dice are tossed. The probability that the total score is a prime number is:
Clearly, n(S) = (6 x 6) = 36.
Let E = Event that the sum is a prime number.
n(E) = 15.
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