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प्रश्न
A card is drawn at random from a pack of 52 cards. Find the probability that card drawn is either a black card or a king
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उत्तर
E⟶ event of getting either a black card or a king.
No. of favourable outcomes = 26 + 2 {13 spades, 13 clubs, king of hearts &
diamonds}
We know that, P(E) =`"No.of favorable outcomes"/"Total no.of possible outcomes"`
P(E) =`(26+2)/52 =28/52 =7/13`
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