Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The first, second and middle terms of an A.P. are a, b and c respectively. Their sum is
A
B
+ c
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Let the number of terms be 2n + 1
middle term = T n+1 = c; T 1 = a, T 2 = b; d = b – a
a + (n + 1 –1) (b – a) = c
n = 
sum of all terms
= 
[ 2a + (2n +1 –1) (b –a)]
= 
= 
+ c
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