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Pls solve 8th question with step by step solution |
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Answer» tion:GIVEN that 4th TERM and 17th term in ratio 1:5. (a+3d)/(a+16d) = 1/5 5A + 15d = a + 16d d = 4a ---- (1).We know that sum of n terms = n/2(2a+(n-1)*d) the sum of 7 terms = 7/2(2a + 6d) = 182 = 7(a + 3d) = 182 (a + 3d) = 26. (a + 3(4a)) = 26 (from (1) a + 12A = 26 a = 2Substitute a = 2 in (1)d = 8.The Ap = 2,10,18,26,34....HOPE it helps |
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