Question

Two coins are tossed simultaneously. Find the probability of getting exactly one head.

Answer 1

SOLUTION :  

Given : Two coins are tossed simultaneously  

If two coins are tossed then the possible outcomes are : HT, HH, TT, TH

Total no. of possible outcomes = 4

Let E = Event of getting exactly one head

Outcomes favourable to  E = HT, TH

No. of favorable outcomes = 2

Probability (E) = Number of favourable outcomes / Total number of outcomes

P(E) = 2/4 = 1/2

Hence, the required probability of getting exactly one head ,P(E) = 1/2 .

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Answer 2

Total outcome =TT , HT , TH , HH
P(E getting one head) = 2/4 or 1/2


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