Question

Find the nth term of AP 3,8,13....is

Answer 1

Answer:

a21=103

Step-by-step explanation:

Ap=3,8,13...

so a= first term = 3,

and d= common difference difference= a2- a1

=8-3

= 5

formula:-

an= a+ ( n-1) d

a21= 3+ (21-1) 5

a21=3+20×5

a21=3+100

a21=103// is answer

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Answer 2

Answer:

nth term=5n-2

Step-by-step explanation:

first find common difference

which is second term - first term=8-3=5,a=3

then using an formula

an=a+(n-1)*d

now putting value of a and d

an=3+(n-1)*5

an=3+5n-5

an=5n-2

as 3-5=-2

so are answer is

an=5n-2

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