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if the first term of an ap is -5 and the common difference is 2, then find the sum of the first six terms |
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Answer» Step-by-step EXPLANATION: a=-5 d=2 n=6 Sn=?
Sn=n/2[2A+(n-1)d] Sn=6/2[2*-5+(6-1)2] Sn=3[-10+5*2] Sn=3[-10+10] Sn=3*0 Sn=0 |
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