1.

In how many ways 10 boys can stand in a circular form ? 1. 362880 2. 154440 3. 231000 4. 143600 5. 236120

Answer» Correct Answer - Option 1 : 362880 

Given

Number of boys = 10

Concept

Number of circular permutation of n different things taken all at a time is (n – 1)!

Calculation

Number of ways to arrange 10 bots in circular form = (10 – 1)!

⇒ 9!

⇒ 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

⇒362880



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