Question

The nth term of a sequence is 2n+1.is the sequence,so formed is A.P ?.if so find it's 12th term

Answer 1

Heya!Here is your answer friend ⏬
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An= 2n + 1

Put n=1

= 2+1=3

Put n=2

= 4+1=5

Put n=3

= 6+1=7

➡Hence the given sequence is an Arithmetic Progression where ,


First term , A= 3 and Common difference, D= 2

A12 = A + 11d

= 3 + 11× 2

= 3 + 22 = 25.


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Answer 2

bahut h itna hi krlo .. sbse easy way