In the following diagram, the triangle represents cricket players, the circle represents ‘students’ the rectangle represents boys and the square represents dancers. The numbers in different segments show the number of persons.
How many students are dances and cricket players but not boys?

which are the numbers that make their presence felt in only one of the geometric figures?

Find the area which shows students studying biology and computer but not mathematics.

In the given figure, how many metallic balls are also heavy?

In the given figure, how many papers are also hard?

Find out which of the diagrams given in the alternatives correctly represent the relation- ship stated in the question
Sharks, Whales, Turtles.

In the given figure, which number presents steel bottles which are caps?

Out of four figures which figure will best represent the relationship among st the classes:
(1) Sparrow
(2) Birds
(3) Mice