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Medium Level Question 23 – answer, explanation & discussion

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Question 23 Back to Exercise

In how many ways can 4 boys and 4 girls stand in a row so that boys and girls alternate?

  • A 576
  • B 40,320
  • C 1,152 Correct
  • D 2,304
Correct Answer: Option C

Patterns: BGBG… or GBGB… → 2

Boys 4! × girls 4! = 576 per pattern

2 × 576 = 1,152

Trap: 576 uses only one pattern.

Answer: 1,152

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