Question

25

th term of the arithmetic progression 3,8,13,18…… is

A. 25 B. 123 C. 128 D. 80​

Answer 1

Given :-

First term = 3

Common difference = 8 - 3 = 5

To Find :-

25th term

Solution :-

We know that

aₙ = a + (n - 1)d

By subsituting value

a₂₅ = 3 + (25 - 1)5

a₂₅ = 3 + (24)5

a₂₅ = 3 + 120

a₂₅ = 123

Answer 2

Answer:

123

Step-by-step explanation:

an=a +(n-1)d

here a=3

d=8-3=5

a25=a +24d

= 3+24*5

= 3+120

= 123