Question

find the indicated terms in each of the following arithmetic progression--1. 1,6,11,16,.........; t162. a= 3,d= 2; tn,t10

Answer 1

1. Here a= 1
d= 6-1= 5
tn= a+(n-1)d
t162= 1+(162-1)5
t162= 1+(161×5)
t162= 1+805
t162= 806


Here a=3
d=2
tn=a+(n-1)d

t10=a+(n-1)d
t10=3+(10-1)2
t10=3+18
t10=21