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Find x when () = 2. Please explain step by step

Find x when () = 2. Please explain step by step-example-1
User Farhan Ahmad
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Answer: Ans is 990. First such a number is 5×0 +2=2, then 5×1 +2=7, like that in all 20 numbers are there from 2 to 97 in A.P.with common difference of 5.

Explanation:

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