1.

Which term of the sequence, 3, 10, 17... is 136?

Answer»

Given sequence 3, 10, 17 …

Let nth term be the 136 i.e.,

Tn = a + (n − 1)d

⇒ 136 = 3(n − 1)7               [∴ a = 3 and d = 7]

⇒ 7n = 140

⇒ n = 20

Hence 20th term is 136



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