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प्रश्न
Three coins are tossed. Find the probability of getting at least 1 head and 1 tail.
बेरीज
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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}.
Exclude the all-heads (HHH) and all-tails (TTT).
Remaining outcomes = 6.
Probability = `6/8`
= `3/4`
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पाठ 22: Probability - Exercise 22A [पृष्ठ ५०५]
