A) H.P.
B) G.P.
C) A.P.
D) None of these
Correct Answer: C
Solution :
Common difference is\[d=\frac{6}{\sqrt{7}}-\frac{5}{\sqrt{7}}=\frac{1}{\sqrt{7}}=\sqrt{7}-\frac{6}{\sqrt{7}}\]. Hence given sequence is A.P.
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