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. If the n term of an A.P is 7-3n, find the sum of first 20 terms. |
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Answer» First term is 4Common difference is -34,1,-2,-5...The FOLLOWING AP is a DECREASING AP.Sum = n/2(2a+( n-1)d)Sum= -490Follow and MARK BRAINLIEST plis.❤❤❤❤❤❤❤❤❤❤ |
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