The number of ways of choosing 4 cards from a pack of 52 playing cards such that four cards belong to same suit
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From 52 playing cards, no of ways of choosing 4 cards
1) of different suit= 13*13*13*13=13^4=28,561 [13 ways of choosing each card]
2) of same suit= (4)* (13*12*11*10)=68,640 [ 4 ways of choosing the suit, 13 ways of choosing the 1st card, 12 ways of choosing the 2nd card after u have already chosen the first, and so on]
1) of different suit= 13*13*13*13=13^4=28,561 [13 ways of choosing each card]
2) of same suit= (4)* (13*12*11*10)=68,640 [ 4 ways of choosing the suit, 13 ways of choosing the 1st card, 12 ways of choosing the 2nd card after u have already chosen the first, and so on]
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