Question

If 4,a,b,28 are in an AP, then the value of b is??

Answer 1

Answer:

If 4,a,b,28 are in an AP :

Step-by-step explanation:

a=4

a5 = 28

a+4d=28

nth term = a +(n-1)d

4+4d=28

4d= 28 -4

d= 24/4

d= 6

now , c= a4

c= a + 3d

c = 4 + 3× 6

c = 4 + 18

c = 22.