How many terms of the series 54, 51, 48, be taken so that their - Maths - Arithmetic Progressions

Question

How many terms of the series 54, 51, 48, be taken so that their sum
is 513? EXPLAIN THE DOUBLE ANSWER

Abhishek Kumar · Accepted Answer

How many terms of the series 54, 51, 48,...... be taken so that their sum is 513? EXPLAIN THE DOUBLE ANSWER.