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Question
Select the correct answer from the given alternatives.
In how many ways 4 boys and 3 girls can be seated in a row so that they are alternate
Options
12
288
144
256
Solution
144
Explanation;
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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