Q4 of 53 Page 15

Why is tossing a coin considered to be a fair way of deciding which team should get the ball at the beginning of a football game?

when an unbiased coin is tossed the chances of getting a head or tail are equally likely. So both teams get team equal and fair chances to try their luck. So tossing a coin considered to be a fair way of deciding which team should get the ball at the beginning of a football game.


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2

Which of the following cannot be the probability of an event?

(i) (ii) -1.5


(iii) 15% (iv) 0.7

 3

Find the probability of getting a head when a coin is tossed once. Also, find the probability of getting a tail.

 5

In a simultaneous throw of two coins, find the probability of getting

(i) two heads


(ii) exactly one head


(iii) no tail


(iv) at least one tail

 6

A bag contains a red ball, a blue ball and a yellow ball, all the balls being of the same size. Kritika takes out a ball from the bag without looking into it. What is the probability that she takes out the

(i) yellow ball? (ii) red ball? (iii) blue ball?