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The nth term of the A. P. 3, 8, 13, 18, ............ is 148. Find n |
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Answer» The A. P. is 3, 8, 13, 18, ............ Let the nth term of the A. P. be 148. a = 3, d = 5 and t n = 148 t n = a + (n - 1) d 148 = 3 + (n - 1) 5 = 3 + 5n - 5 ∴ 5n = 148 + 2 = 150 ∴ n = 30 ∴ 30th term is 148. |
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