In the given diagram, the shapes indicate the categories of persons. The numbers given in the different segments represent the number of persons in that category. How many dancers are either gymnasts or singers but NOT both?
The price of fuel has now increased by 20%. If a customer wants to keep his expenditure on fuel the same, he should reduce the consumption of the quantity of fuel by:
The sequence of folding a piece of circular paper and the manner in which the folded paper has been cut is shown in the following figures. How would this paper look when unfolded?