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The annual rainfall in Vidarbha in five years is given below. What is the average rainfall for those 5 years? 

900 mm, 650 mm, 450 mm, 733 mm, 400 mm.

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Average rainfall for 5 years \(=\frac{\text{sum of annual rainfall in five years}}{\text{number of years}}\)

\(=\frac{900+650+450+733+400}{5}\)

\(=\frac{3133}{5}\)

= 626.6

∴ The average rainfall in Vidarbha for 5 years was 626.6 mm.

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