Q. 4 G5.0( 1 Vote )

Write the first four terms of the A.P. when first term a and common difference d are given as follows:

a = -7, d = -7

Answer :

Given: a = -7 and d = -7

The general form of an A.P is a, a+d, a+2d, a+3d,…

So, the first term a is -7, and the common difference d is -7, then the first four terms of the AP is

-7, (-7+(-7)), (-7+2×(-7)), (-7+3×(-7))

-7, (-7 – 7), (-7 – 14), (-7 – 21)

-7, -14, -21, -28

Hence, the first four terms of the A.P. is -7, -14, -21 and -28.

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