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प्रश्न
Three coins are tossed. Find the probability of getting exactly 2 heads.
योग
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उत्तर
Given: Three fair coins are tossed once. Assume each of the 23 = 8 outcomes is equally likely; the sample space is {HHH, HHT, HTH, THH, HTT, THT, TTH, TTT}.
Favorable outcomes: HHT, HTH, THH (3 outcomes).
Probability = `"Favourable"/"Total"`
= `3/8`
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अध्याय 22: Probability - Exercise 22A [पृष्ठ ५०५]
