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Question
The probability of getting 2 heads, when two coins are tossed, is
Options
1
`3/4`
`1/2`
`1/4`
Solution
All possible outcomes are HH, HT, TH and TT.
Total number of outcomes = 4.
Getting 2 heads means getting HH.
Numbers of favourable outcomes = 1.
∴ P(getting 2 heads) = `("Number of favourable outcomes")/"Number of all possible outcomes"`
`= 1/4`
Thus, the probability of getting 2 heads is `1/4`.
Hence, the correct answer is option (d).
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