b+(b+1)+(b+ 2)4-= 21 – InterviewSolution

1.

b+(b+1)+(b+ 2)4-= 21

Answer»

b + (b+1) + ( b+2) --------------------------- = 21 4

3b + 3 = 4 × 21

b + 1 = 28

b = 28 - 1 = 27

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