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Question -

In how many ways can one select a cricket team of eleven from 17 players in which only 5 players can bowl if each cricket team of 11 must include exactly 4 bowlers?



Answer -

Given 17 players inwhich only 5 players can bowl if each cricket team of 11 must include exactly 4bowlers

There are 5 playershow bowl, and we can require 4 bowlers in a team of 11

 Number of waysin which bowlers can be selected are: 5C4

Now other players leftare = 17 – 5(bowlers) = 12

Since we need 11players in a team and already 4 bowlers are selected, we need to select 7 moreplayers from 12.

 Number of wayswe can select these players are: 12C7

 Total number ofcombinations possible are: 5C4 × 12C7

 Number of wayswe can select a team of 11 players where 4 players are bowlers from 17 playersare 3960

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