Question

MA.P. : 3, 8, 13, ..., 253 में अंतिम पद से 20वाँ पद ज्ञात कीजिए।​

Answer 1

Answer:

first term (a)=3

common difference (d)=a2-a1=8-3=5

and n=20

A20=?

we know that,

an=a+(n-1)d

A20=3+(20-1)5

A20=3+19×5

=3+95

=98

it means 20 term is 98 Ans.