4 coins are tossed once. Find the probability | vedclass

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Question

(B) When $4$ coins are tossed,the total number of possible outcomes is $2^4 = 16$.
The favorable outcomes for getting exactly $3$ tails are: $(T, T,

Vedclass · Accepted Answer

$\frac{1}{4}$

Vedclass · Answer

(B) When $4$ coins are tossed,the total number of possible outcomes is $2^4 = 16$.
The favorable outcomes for getting exactly $3$ tails are: $(T, T, T, H), (T, T, H, T), (T, H, T, T), (H, T, T, T)$.
There are $4$ such favorable outcomes.
Therefore,the probability of getting exactly $3$ tails is $P = \frac{	ext{Number of favorable outcomes}}{	ext{Total number of outcomes}} = \frac{4}{16} = \frac{1}{4}$.

$4$ coins are tossed once. Find the probability of getting exactly $3$ tails.

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