If the coefficients of \[{{5}^{th}}\], \[{{6}^{th}}\]and \[{{7}^{th}}\] terms in the expansion of \[{{(1+x)}^{n}}\]be in A.P., then n = [Roorkee 1984; Pb. CET 1999]

If the coefficients of \[{{5}^{th}}\], \[{{6}^{th}}\]and \[{{7}^{th}}\

1.	If the coefficients of \[{{5}^{th}}\], \[{{6}^{th}}\]and \[{{7}^{th}}\] terms in the expansion of \[{{(1+x)}^{n}}\]be in A.P., then n = [Roorkee 1984; Pb. CET 1999]
A.	7 only
B.	14 only
C.	7 or 14
D.	None of these
Answer» D. None of these

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If the coefficients of \[{{5}^{th}}\], \[{{6}^{th}}\]and \[{{7}^{th}}\] terms in the expansion of \[{{(1+x)}^{n}}\]be in A.P., then n = [Roorkee 1984; Pb. CET 1999]

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