Find the th 20 term of an A.P. whose 3rd term is 7 and the seventh term exceeds three times the 3rd term by 2. Also find its th n term
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Answered by
1
Answer:
your answer is 29 bro
...
Answered by
4
hey mate here is ur answer =
a+2d=7----(1)
a+6d=2+a+2d
4d=2
d=1/2
a=6
tn=6+(n-1)×1/2
=6+n/2-1/2
=11/2+n/2=11+n/2
hope it helps.
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