1.

If 4,a, b, 28 are in ap the value of b is .... Plz answer with explaination

Answer»

Answer:

20

Step-by-step EXPLANATION:

a-4=b-a=28-b=d (SAY)

a-4=d

a=d+4

28-b=d

b=28-d

b-a=d

28-d-d-4=d

24=3d

d=8

so, b=28-d=28-8=20



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