21 is the middle term of an Ap .how many terms are there?
Answers
Answered by
0
Answer:
I think 0........................................
Answered by
1
Answer:
42, 41
Step-by-step explanation:
if even then
n/2=21
n=42
and if odd
then
n+1/2=21
n=42-1
n= 41
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