If \[^{n}{{P}_{r}}=840,{{\,}^{n}}{{C}_{r}}=35,\] then \[n\] is equal to [EAMCET 1986]

If \[^{n}{{P}_{r}}=840,{{\,}^{n}}{{C}_{r}}=35,\] then \[n\] is equal t

1.	If \[^{n}{{P}_{r}}=840,{{\,}^{n}}{{C}_{r}}=35,\] then \[n\] is equal to [EAMCET 1986]
A.	1
B.	3
C.	5
D.	7
Answer» E.

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If \[^{n}{{P}_{r}}=840,{{\,}^{n}}{{C}_{r}}=35,\] then \[n\] is equal to [EAMCET 1986]

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