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Find the number of term of finite a.p 7,11,15....103 |
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Answer» no. of term = 25 Step-by-step explanation: first term , a = 7 last term , l = 103 COMMON difference , d = 11 -7 = 15 - 11 = 4 let the number of term is 'n' ∴ l = a + (n-1)d 103 = 7 + (n-1)4 103 = 7 + 4n - 4 103 -3 = 4n n = 100/4 = 25
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