Question

the fifth term of ap is 20 and the sum of the elbemt term is 64​

Answer 1

Step-by-step explanation:

Let the first term of AP be a and common difference be d,

According to question,

5th term is 20 => a+4d=20 .......(1)

And, a+6d+a+10d=64

=> 2a+16d=64

=> a+8d=32 .........(2)

From (1) & (2),

d=3, & a=8

Hence common Difference= 3