Question

If first term of is -7 and common difference is 5 find 18th term

Answer 1

Here is your answer,

Let a be the first term of this AP.
and d be the common difference.

a = -7
d = 5

a18 = a+17d

= -7+17x5

= -7+85

= 78

Therefore, the 18th term is 78.




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