ff nth term of an AP is 9 - 5n, find the sum of first three terms.

1.	ff nth term of an AP is 9 - 5n, find the sum of first three terms.
Answer» nth term = 9 - 5n 1st term = 9 - 51 = 9 - 5 = 4 2nd term = 9 - 52 = 9 - 10 = -1 3rd term = 9 - 5*3 = 9 - 15 = -6 Sum of first three terms = 4 - 1 - 6 = 3 - 6 = -3 If you find this answer helpful then like it.

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nth term = 9 - 5n 1st term = 9 - 5*1 = 9 - 5 = 4 2nd term = 9 - 5*2 = 9 - 10 = -1 3rd term = 9 - 5*3 = 9 - 15 = -6 Sum of first three terms = 4 - 1 - 6 = 3 - 6 = -3

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ff nth term of an AP is 9 - 5n, find the sum of first three terms.

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