Question

In an ap if an=2n+1 then the comments different is

Answer 1

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Common Difference = 2

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Given,

General Term $a_{n}$ = 2n + 1

where, n = number of terms

For first term, n = 1:

First Term($a_{1}$) = 2*1+1

First Term($a_{1}$) = 3

For second term, n = 2:

Second Term($a_{2}$) = 2*2+1

Second Term($a_{2}$) = 5

For third term, n = 3:

Third term($a_{3}$) = 2*3+1

Third term($a_{3}$) = 7

Common Difference = Term 2($a_{2}$) - Term 1($a_{1}$)

Common Difference = 5-3

Common Difference = 2.

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