In a class, there are 45 children, 20 of those have offered Science but not Historywhere as 30 have offered Science. The number of students who have offered
History but not Science is:
From a stick of length 6p2+ 4p + 2, two pieces each of length 3p 2+ 2 are cut off.
The length of the remaining part of the stick is:
The total surface area of a cube is 726 cm², the volume of the cube is:
Three times a number increased by 8 is as twice the number increased by 15. Thenumber is:
The price of an article is increased by 25%, the increase is Rs. 10, then the newprice is:
There are 50 boys in a class whose average age is 12 years. There are 40 boys inanother class whose average age is 15 years. The average age of both the classes
taken together is: