Question

18th term of the A.P. 4, 1, ,- 2 …. Is

Answer 1

Here,

a (first term) = 4 ,

a2 (Second term) = 1 ,

d (Common difference) = a2-a1.

= 1 - 4

= -3.

So,

18th term = a + 17d.

= 4 + (17×-3)

= 4 - 51.

= - 47.

So, the eighteenth term of this AP is (-47).

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