The nth term of the A.P.2,5,8...?
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a = 2
d = a2 - a1
d = 5 - 2
d = 3
an = a + (n - 1)d
an = 2 + (n - 1)3
an = 2 + 3n - 3
an = 3n - 1
The n th term of an AP is 3n - 1
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