In a city, 30% are females, 40% are males and remaining are children.What percent are children?

What is percentage composition.

If 60% people in a city like cricket, 30% like football and the remaining like other games,then what percent of the people like other games?If the total number of people are 50 lakh,find the exact number who like each type of game.

A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind

The velocity of projection of a body is increased by2%. Other factors remaining unchanged, what will be the percentage change in the maximum height reached

What is 10% law?

Of the students in a college, it is known that 60% reside in hostel and 40% are day scholars (not residing in hostel) . Previous years results report that 30% of all students who reside in hostel attain A grade and 20% of day scholrs attain A grade in their annual examination . At the end of the year, one student is chosen at random from the college and he has an A grade, what is the probability that the student is a hostler ?

In human beings, the statistical probability of getting either a male or a female child is 50%. Give reasons and explain with the help of a diagram.

In a class, 30% students fail in English, 20% students fail in Hindi and 10% students fail in both English and Hindi. A student is chosen at random, then what is the probability he fail in English, if he has failed in Hindi?

A contractor plans to install two slides for the children to the play in a park. For the children below the age of 5 years, she prefers to have slide whose top is at a height of 1.5m, and is inclined at an angle of 30^(@) to the ground, whereas for elder children, she wants to have a steep slide at a height of 3m, and inclined at an angle of 60^(@) to the ground. What should be the length of the slide in each case ?

A couple has two children, (i) Find the probability that both children are males, if it is known that at least one of the children is male. (ii) Find the probability that both children are females, if it is known that the elder child is a female.