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Question

From a pack of 52 cards, four cards are drawn. The chance that they will be the four honours of the same suit is k/541450. Find the value of k.

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Solution

Here n= Total no. of ways m=52C4= 52×51×50×491×2×3×4=13×17×25×49=270725.
There are four honours (ace,king,queen and knave)in each suit and so there are 4 sets of 4 honours each.
To obtain the favourable number of ways, we have to select one suit of four honours from these four sets.
m=4C1=4
p=required probability =mn=4270725

Comparing with k541450, we get the value of k=8

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