Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If the first second and last term of an A.P. are a, b, c then the
number of terms will be-
A
B
C
D
None
Text Solution
Verified by ExpertsThe correct answer is:
C
First term = a, common difference d = b –a
T n = c = a + (n –1) d
c – a = (n –1) (b –a)
n –1 = 
n = 
+ 1= 
= 
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