Question

The sum of first 8 terms of an ap is 100 and the sum of its first 19 term is 551 find the ap

Answer 1

THIS IS AN EASY ONE!! SEE THE PICTURE AND REMEMBER FOLLOWING POINTS:-

*I USED THE FIRST EQUATION TO FIND "a" in terms of "d".

*PUT THE VALUE IN EQUATIPN 2 TO GET ONLY ONE VARIABLE EQUATION AND SOLVED.

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