Question

The 5th term of an arithmetic sequence is 20 and 8th term is 32
Find the commen difference

Answer 1

Answer:

4

Step-by-step explanation:

let the first term of the sequence be 'a' and common difference is 'd'

So 8th term => a + ( 8-1)d = 32

=> a +7d = 32 -------------(i)

and 5th term=> a +4d= 20 ------------(ii)

Now (i) -(ii) => 3d = 12

=> d =12/3

so, d= 4

Hence common difference is 4 .