Question

the nth term of an ap is 3n+5 find its common difference

Answer 1

We are given, an= 3n+5

 So, a1= 3(1) + 5
           = 8

 and, a2= 3(2) + 5
             = 6 + 5
             = 11

 so common difference, d = a2 - a1 = 11-8 
                                         = 3

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Answer 2

Answer:

an = 3n + 5

a1 = 3(1) + 5 = 8

a2= 3(2) + 5 = 6 + 5 = 11

common difference d = a2 - a1 = 11-8   = 3

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