Question

15. In A.P., if the first term of two consecutive terms is 16 and their common difference
is 4. then the second one is
1 20
2) 12
3) 12
4) -4
rithmetic sequence ?​

Answer 1

Answer: 4 ] -4

Step-by-step explanation: In this way, how do you find the sum of an arithmetic series?

To find the sum of an arithmetic sequence, start by identifying the first and last number in the sequence. Then, add those numbers together and divide the sum by 2. Finally, multiply that number by the total number of terms in the sequence to find the sum.

Likewise, what is the sum of n terms? The sum of n terms of AP is the sum(addition) of first n terms of the arithmetic sequence. It is equal to n divided by 2 times the sum of twice the first term – 'a' and the product of the difference between second and first term-'d' also know as common difference, and (n-1), where n is numbers of terms to be added.

Also to know is, what is the sum of the series?

The n-th partial sum of a series is the sum of the first n terms. The sequence of partial sums of a series sometimes tends to a real limit. If this happens, we say that this limit is the sum of the series. If not, we say that the series has no sum.

What is the formula of sum of n terms?

The Sum Formula The formula says that the sum of the first n terms of our arithmetic sequence is equal to n divided by 2 times the sum of twice the beginning term, a, and the product of d, the common difference, and n minus 1. The n stands for the number of terms we are adding together.

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