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Two coins are tossed. Find the probabili...

Two coins are tossed. Find the probability of the event
no head turns up.

Text Solution

Verified by Experts

The correct Answer is:
`1/4`
Let S be the sample space
Then `S={HH, HT, TH, T T}.`
Let B be the event where no head turns up.
Then `B={T T}" "therefore n(B)=1.`
`P(B)=(n(B))/(n(S))" "thereforeP(B)=1/4.`
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