If \[2\times {}^{n}{{C}_{5}}=9\,\,\times \,\,{}^{n-2}{{C}_{5}}\],then – McqOptions

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1.	If \[2\times {}^{n}{{C}_{5}}=9\,\,\times \,\,{}^{n-2}{{C}_{5}}\],then the value of n will be
A.	7
B.	10
C.	9
D.	5
Answer» C. 9

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