Asked by  | 13th Jun, 2008, 07:18: PM

Expert Answer:

Hi KumarSaurav,

The nth tem of the AP is given by:

Tn = Sn - Sn-1

Sn = 4n - n2

Thus Tn = 4n - n2 - 4(n-1) + (n-1)2

To get the 1st, 3rd and 10th term simply substitute the value of n as 1, 3 and 10 in the above expression.

To get the sum of the first 2 terms substiute the value of n as 2 in the expression for Sn

Topper Learning Team

Answered by  | 14th Jun, 2008, 12:14: PM

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