Question

In an ap a, 5,13,21,....... Find a
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Answer 1

a is -3

Step-by-step explanation:

the common difference is +8.

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Answer 2

Answer:

a=-3 is Answer

Step-by-step explanation:

We know that in an ap

difference is same means:

=>21-13=13-5=5-a

=>8=8=5-a

=>a=5-8

=>a=-3