Question

2,9,28,65,.....find nth term of an arithmetic progression​

Answer 1

Answer:

N is 10

Step-by-step explanation:

a=2

d=a2-a1

=9-2=7

an=65

an=a+(n-1)d

65=2+(n-l)7

63=7n-7

70=7n

n=70/7

n=10

Answer 2

Answer:

This is not an arithmetic progression since the common difference is not same.

a2-a1=d

9-2=7 Here d is 7.

a3-a2=d

28-9=7

19=7 Here, the equation is not satisfying the conditions

Therefore nth term cannot be found in this series.

Step-by-Step Explanation:

Hope you understand

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