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Instructions
   
The numbers of different colleges in india in different years is given in the graph below. Percent distribution of different colleges in year 1980 and 1990 is shown in pie chart
  Â
Solution
Average number of colleges for the given yearsÂ
= $$\frac{(5+10+20+40+80)\times1000}{5}$$
= $$\frac{155000}{5}=31000$$
=> Ans - (B)
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