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Question

Find the next term in the following sequence: a-2d, a-d, a, a+d,...


A

a - 2d

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B

2a + 2d

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C

4a + 2d

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D

a + 2d

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Solution

The correct option is D

a + 2d


let A1 and D be the first term and the common difference respectively.
A1=a2d
D=a-d-a+2d=d
A5=A1+4D=a2d+4d=a+2d

So, option a is correct.

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