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Three Coins Are Tossed Once. Find the Probability of Getting - Mathematics

Three coins are tossed once. Find the probability of getting

(i) 3 heads

(ii) 2 heads

(iii) at least 2 heads

(iv) at most 2 heads

(v) no head

(vi) 3 tails

(vii) exactly two tails

(viii) no tail (ix) at most two tails.

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Solution

When three coins are tossed once, the sample space is given by

S = {HHH, HHT, HTH, THH, HTT, THT, TTH, TTT}

∴Accordingly, n(S) = 8

It is known that the probability of an event A is given by

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APPEARS IN

NCERT Class 11 Mathematics Textbook
Chapter 16 Probability
Q 8 | Page 404
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