Name the sum of Ap formula

1.	Name the sum of Ap formula
Answer» N/2{2a+(n-1)d} The nth term of an AP with first term (a) and common difference (d) an = a+(n-1)dan is also called the genral term of the AP. If there are n terms in the AP, then (an ) represents the last term l N/2[2a+d] N/2[2a-d]

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