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प्रश्न
Two coins are tossed simultaneously. Write the sample space (S), n(S), the following event A
using set notation and n(A), where ‘A is the event of getting at least one head.’
उत्तर
Since two coins are tossed simultaneously,
S = {HT, TH, HH, TT}
⇒ n(S) = 4
A = {HT, TH, HH}
⇒ n(A) = 3
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