Question

what is the no. of cards in a deck

Answer 1

A standard deck consists of 52 cards 
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if we include joker it will be 53

but normally we use only 52 cards

13 ace
13 spade
13 hearts
13 clubs

Answer 2

There are 52 cards in deck, out of which 26 are red and remaining are black. The red cards are divided into two groups/suits, diamond and heart while, the black cards are divided into club and spade. There are 13 cards in each group/suit i.e A,2,3,4,5,6,7,8,9,10,J,Q and K.