Question

c) If a = first term, d = common difference n = the number of terms of an A.P. Write formula for common difference in an A.P.​

Answer 1

The common difference is the value between each number in an arithmetic sequence. Therefore, you can say that the formula to find the common difference of an arithmetic sequence is: d = a(n) - a(n - 1), where a(n) is the last term in the sequence, and a(n - 1) is the previous term in the sequence.