what is the formula of an AP: sum of second term, sum of 3 term and sum, first term and sum of last term
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the formula of Ap is : a+(n-1)d
the sum of 3 term is: a+2d
second term is: a+d
and the last term is: n/2(a+l)
the sum of 3 term is: a+2d
second term is: a+d
and the last term is: n/2(a+l)
payal6311:
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how did you know this is rong
because i ask u sum? don't asked that formula of AP
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