If a ,b, c are in A.P., then \[\frac{1}{\sqrt{a}+\sqrt{b}},\,\frac{1}{\sqrt{a}+\sqrt{c}},\] \[\frac{1}{\sqrt{b}+\sqrt{c}}\] are in [Roorkee 1999; Kerala (Engg.) 2005]

If a ,b, c are in A.P., then \[\frac{1}{\sqrt{a}+\sqrt{b}},\,\frac

1.	If a ,b, c are in A.P., then \[\frac{1}{\sqrt{a}+\sqrt{b}},\,\frac{1}{\sqrt{a}+\sqrt{c}},\] \[\frac{1}{\sqrt{b}+\sqrt{c}}\] are in [Roorkee 1999; Kerala (Engg.) 2005]
A.	A.P.
B.	G.P.
C.	H.P.
D.	None of these
Answer» B. G.P.

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If a ,b, c are in A.P., then \[\frac{1}{\sqrt{a}+\sqrt{b}},\,\frac{1}{\sqrt{a}+\sqrt{c}},\] \[\frac{1}{\sqrt{b}+\sqrt{c}}\] are in [Roorkee 1999; Kerala (Engg.) 2005]

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