Question

What is arithmetic progression?

Answer 1

AP is a list of numbers in which each term is obtained by adding a fixed number to the proceeding term except the first term.
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Answer 2

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Arithmetic Progression ( AP ) : It is a list of numbers in which each term is obtained by adding a fixed number to the preceding term except the first term . This fixed number is called common difference (d) of the AP. It can be positive , negative or zero.

a2 = a1 + d
a3= a2 + d
:
:
an = a+ (n-1) ×d