Question

The first four terms of an A.P , whose first term is -2 and the common difference is-2, are
a. -2, 0 , 2 , 4
b. -2 ,4 ,-8 16
c. -2 ,-4 ,-6 ,-8

Answer 1

Answer:(c)

Step-by-step explanation:a=-2,d=-2

An=a+(n-1)d

A1=-2+(1-1)d=2

A2=-2+(2-1)(-2)=-4

A3=-2+(3-1)(-2)=-6

A4=-2+(4-1)(-2)=-8

Which coincides with the (c) solution

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Answer 2

Answer:

Option C is correct

-2, -4, -6, -8

Step-by-step explanation:

a = -2 d = -2

First term = a = -2

Second term = a+d = -2 + (-2) = -4

Third term = a+2d = -2 + 2(-2) = -6

Fourth term = a+3d = -2 + 3(-2) = -8

Therefore the A.P is -2, -4, -6, -8

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