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CGP EDU Academic Team
Published on: August 13, 2026
If a 1 , a 2 , a 3 , a 4 , a 5 are in H.P. then find 
=
Text Solution
Verified by ExpertsThe correct answer is:
B
a 1 . a 2 + a 2 a 3 + a 3 a 4 + a 4 a 5 = (5 – 1) a 1 . a 5
= 4a 1 a 5
= 
= 
× [(5 – 1) a 1 a 5 ] = 4
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