Question

Two AP's have the same common difference. The first term of one AP is -1 and that of the other is -8. Then the difference between their 4th terms is *

Answer 1

Let the common difference of both AP be d

Fourth term of first AP -- Fourth term of second AP

= -1 + 3d - (-8 + 3d )

= -1 + 3d +8 -3d

= 7 Ans.

Answer 2

Answer:

Let the common difference of both AP be d

Fourth term of first AP -- Fourth term of second AP

= -1 + 3d - (-8 + 3d )

= -1 + 3d +8 -3d

= 7 Ans.

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