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If a,b,c are the values of n where ...

If a,b,c are the values of n where `""^(n)P _(7) = 42 ""^(n)P_(5) ,""^(n)P_(4) = 1680 , ""^(n) P_(3) =1320` respectively then the ascending order of a,b,c is

A

a,b,c

B

b,c=a

C

c=b,a

D

c,a,b

Text Solution

Verified by Experts

The correct Answer is:
C
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