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If the nth term of an A.P an=2n-1 then it's S4 is |
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Answer» Step-by-step explanation: d= 2 Sn=n/2 {2A + (n-1)d} S4=4/2 {2×1 +(4-1)2} =2 (2+3×2) =2×8 =16 |
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