Find the algebraic expression to express the following number series :

4,7,10,13,16,19,… (n = 1,2,3,.....)

3n - 1

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4n -1

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3n + 1

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Solution

The correct option is D
3n + 1

Here, the difference between the numbers is 3.

Also when we divide these numbers by 3 it will leave the remainder 1.

Hence the algebraic expression will be 3n + 1.

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