Find the middle term of the AP 6,13,20, ---------216.
Answers
Answered by
3
Answer:
a=6
d=13−6=7
T
n
=a+(n−1)d
216=6+(n−1)7
∴n=31
If n is odd then the middle term is
2
n+1
Middle term, =
2
31+1
=16
T
16
=6+(16−1)7=111
Answered by
5
Answer:
ANSWER=>31
Step-by-step explanation:
a=6
d=13-6=7
an=216
an=a+(n-1)d
216=6+(n-1)(7)
216-6=(n-1)(7)
210=(n-1)(7)
n-1=210/7
n-1=30
n=30+1
n=31
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