the 8th term of an A.P. is 25 and the 24th term is 77 . find the common difference and nth term
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Answer:
The common difference is 13/4.
The nth term is 9/4 + (n - 1)13/4.
Explanation:
a+7d = 25
a+23d = 77
___________
-16d = -52
d = 52/16
d = 13/4
a = 7×13/4 = 25
a = 25 - 91/4
a = (100 - 91)/4
a = 9/4
nth term is 9/4 + (n - 1)13/4
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