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Q.

Three coins are tossed once, then the probability of getting two heads is,


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a

1 5

b

3 4

c

3 8

d

1 3  

answer is C.

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Detailed Solution

Given to us is a coin which has 2 faces and hence two outcomes i.e., head(H) and tails(T).
When we toss the three coins total probabilities will be HHH, HHT, HTT, TTT, TTH, THH, THT, HTH.
So, we have eight probabilities out of them only three are getting two heads.
Therefore, the probability of getting two heads is 3 8 .
Hence, option 3 is correct.
 
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