If the first and \[{{(2n-1)}^{th}}\] terms of an A.P., G.P. and H.P. are equal and their \[{{n}^{th}}\] terms are respectively \[a,\ b\] and \[c\], then [IIT 1985, 88]

If the first and \[{{(2n-1)}^{th}}\] terms of an A.P., G.P. and H.P. a

1.	If the first and \[{{(2n-1)}^{th}}\] terms of an A.P., G.P. and H.P. are equal and their \[{{n}^{th}}\] terms are respectively \[a,\ b\] and \[c\], then [IIT 1985, 88]
A.	\[a\ge b\ge c\]
B.	\[a+c=b\]
C.	\[ac-{{b}^{2}}=0\]
D.	(a) and (c) both
Answer» E.

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If the first and \[{{(2n-1)}^{th}}\] terms of an A.P., G.P. and H.P. are equal and their \[{{n}^{th}}\] terms are respectively \[a,\ b\] and \[c\], then [IIT 1985, 88]

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