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1+2+3+4+5.................+100=? |
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Answer» Thanks buddy Here a= 1 , d = 1 , l = 100 , Sn = n/2 (a+l )= 100/2(1+100)= 50 * 101= 5050 a=1 d=1 l=100Sn = n/2(a+l)=50×101=5050 |
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