In a group of 6 batsmen and 4 bowlers, four cricketers are to be selected. In how many different ways can they be selected such that at least one batsman should be there?
A
159
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B
194
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C
205
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D
209
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Solution
The correct option is D 209 We may have (1 batsman and 3 bowlers) or (2 batsmen and 2 bowlers) or (3 batsmen and 1 bowler) or (4 batsmen). Therefore, Required number of ways =(6C4×4C3)+(6C2×4C2)+(6C3×4C1)+6C4=(6C1×4C1)+(6C2×4C2)+(6C3×4C1)+6C2=24+90+80+15=209