Q7 of 54 Page 308

Three coins are tossed simultaneously. Find the probability of getting

(i) at least one head (ii) exactly two tails (iii) at least two heads.

The outcomes when three coins are tossed aare:(H H H) (H H T) (H T H) (T H H) (T T H) (T H T) (H T T) (T T T)


(i) No of probable outcomes of getting at least one head = 7


⇒ probability


(ii) no of probable outcomes of getting exactly 2 tails = 3


⇒ probability


(iii) no of probable outcomes pf at least two heads = 4


⇒ probability



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