Question

one card is selected from a well shuffled Deck of 52 cards. find the probability of getting a red card with prime number.

Answer 1

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Total number of cards = 52
No. red cards with prime numbers = 10
Probality= No. of favourable outcomes/Total no. of possible outcomes.
= 10/52

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Answer 2

So, in a deck there are 52 cards,
out of which our required cards (i.e. a red card with a prime number) are 8.

And probability = favourable outcomes/ sample space
Hence,   probability= $\frac{8}{52}$