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If ""^(56)P(r+ 6):""^(54)P(r+3) = 30800,...

If `""^(56)P_(r+ 6)`:`""^(54)P_(r+3)` = 30800, find `""^(r)P_(2)`.

A

14

B

20

C

41

D

21

Text Solution

Verified by Experts

The correct Answer is:
C
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