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In how many ways 4 boys and 3 girls can be seated in a row so that they are alternate.(A) 12(B) 288(C) 144(D) 256 |
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Answer» (C) 144 B G B G B G B 4 boys take their seats in 4! ways. 3 girls take their seats in 3! ways. Required number = 4! × 3! = 24 × 6 = 144 |
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