Sequence frac{5}{{√ 7 }} , frac{6}{{√ 7 }} , √ 7 , ....... is

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8. Sequences and Series

easy

The sequence $\frac{5}{{\sqrt 7 }}$, $\frac{6}{{\sqrt 7 }}$, $\sqrt 7 $, ....... is

A

$H.P.$

B

$G.P.$

C

$A.P.$

D

None of these

Solution

(c) 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 $A.P.$

Standard 11

Mathematics

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