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Question

Find the algebraic expression to express the following number series :

7,12,17,22,27,32,…… (n = 1,2,3...)


A

5n - 2

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B

5n

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C

5n + 2

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D

4n + 2

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Solution

The correct option is C

5n + 2


Each number in the above series can be expressed as (5n+2), where n= 1,2,3,......

7 = 5(n) +2, when n=1

12= 5(n) + 2, when n= 2 and so on..


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