Q44 of 53 Page 15

Savita and Hamida are friends. What is the probability that both will have (i) different birthdays? (ii) the same birthday? (ignoring a leap year).

Since there are 365 days


(i)If Savita is born is any day and Hamida born on any day except on which Savita was born.


P(different birthdays) =


(ii) If Savita and Hamida have a same birthday, then it can be any 1 day of 365 days.


P(the same birthday) =


More from this chapter

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42

Two terms, A and B, play a game of football. It is known that the probability of A winning the game is 0.58. What is the probability of B winning the game if a tie is ruled out?

 43

Harpreet tosses two different coins simultaneously (say, one is of Re 1 and other of Rs. 2). What is the probability that she gets at least one head?

 45

A card is drawn at random from a well-shuffled deck of playing cards. Find the probability of drawing a

(i) face card


(ii) card which is neither a king nor a r


d card.

 46

A die is thrown twice. What is the probability that

(i) 5 will not come up either time?


(ii) 5 will come up at least once?


[Hint: Throwing a die twice and throwing two dice simultaneously are treated as the same experiment]