The n term of an
a.P. ; if the sum of whose n terms is sn
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nth term of A.P, an = a + (n - 1)*d
Sum of n terms of an A.P, Sn = (n/2)*(2a + (n - 1)*d)
Sum of n terms of an A.P, Sn = (n/2)*(2a + (n - 1)*d)
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