In a family of 3 children, the probability of having atleast one boy is:

A card is selected from a deck of 52 cards. The probability of its being a red face card is:

If P(A) denotes the probability of an event then:

The probability of getting exactly one head in tossing a pair of coins is

The probability of getting a spade card from a well shuffled deck of 52 cards is

A bag contains 3 red balls , 5 green balls,4 blue balls,3 yellow balls and 2 purple balls. A ball is drawn at random from the bag. The probability that a red ball drawn is

One card is drawn from a well-shuffled deck of 52 cards. The probability that the card will not be an ace is

A lot consists of 144 ball pens of which 20 ae defective and the others are good. Tanu will buy a pen if it is good but will not buy if it is defective. The shopkeeper draws one pen at random and gives it to her. The probability that she will buy that pen is

One card is drawn from a well shuffled deck of 52 playing cards. The probability of getting a non-face card is