Question

In an Ap 19th term is 52 and 38th term is 128 find the first 56th terms

Answer 1

Lets write what is given in the question :-
a + 18d = 52
a + 37d = 128
Then by solving above two equation we get :-
a = 4
d = 8/3

Now putting the value of a and d in below equation :-
a + 55d
We get 452/3 as answer

Answer 2

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