Question

In an arithmetic progrission , if an = 2n+1 , then the common diffrence of the given progression is _____​

Answer 1

Answer:

put n=1:

a1 =2(1)+1 =3

put n=2:

a2 =2(2)+1 =5

Hence,

common difference(d)=a2-a1 =5-3 =2

Step-by-step explanation:

Therefore common difference is 2

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Answer 2

Answer:

✯COMMON DIFFERENCE = 2✯

Since (a)n =2n+1

Let,

∴

a1=3,

a2 =5

d = common difference ...

a2 - a1= d

⇒ d=5−3=2

Hence, d= 2

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