Question

if 4,a,b,28 are in arithmetic progression then the value of b is​

Answer 1

Step-by-step explanation:

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Answer 2

Let p be the first term i.e. 4

p=4

let d be the common difference

4+d=a

4+2d=b

4+3d=28

∴ d=$\frac{24}{3}=8$

d=8

a=4+8= 12

and b= 4+2d= 4+16= 20

∴ b=20

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