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Q.

Ten IIT and 2IIIT students sit in a round table. The number of ways in which exactly 3IIT students are sit in between 2IIIT students is____

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a

10P3×2!×8!

b

10P3×2!×8!

c

10P3×3!×8!

d

10P3×2!×7!

answer is B.

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Detailed Solution

2 IIIT students are arranged in 2! Ways
3 IIIT students can be arranged in between 2 IIIT students is 10P3
Req. no ways 10P3×2!×7!

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