Question

4, a, b, 28 are A.P the value of 'b' is​

Answer 1

Answer:12-Jun-2021 — 4 ,a ,b,28 are in A.P. then their common difference is 8 then value of b is 20. Muxakara and 19 more users found this answer helpful. Thanks 15.

2 answers

 

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Top answer:  

Answer:20Step-by-step explanation:a-4= b-a -(1)a-4 = 28-b - (2)from 1 & 2a =12,b=20

Step-by-step explanation:

Answer 2

Answer:

b=20.

Step-by-step explanation:

If a,b,c,d are in A.P then,

b-a=d-c=c-b

Therefore

a-4= b-a

2a=b+4

And also

28-b= b-a

28+a=2b

28+(b+4/2)=2b

56+b+4=4b

60=3b

b=20.