Question

If -2 ,y1,y2,13 are in A.P.,then y2is

Answer 1

Answer:

y2= -12

Step-by-step explanation:

a1= -2

a4= a1+3d=13

Now,

a4-a1= -2-13

a1+3d-a1= -15

3d = -15

d= -15/3

d= -5

Hence,

a3= a1+2d

y2= -2+2(-5)

y2= -2-10

y2= -12