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Find the probability of getting head in ...

Find the probability of getting head in a toss of one coin:

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In one toss of a coin
sample space `S={H,T}`
`implies` NO. of total outcomes `=2`
No. of favourable outcomes `=1`
`:.` Probability of getting head
`=("No. of favourable outcomes")/("Total outcomes")`
`=1/2`
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