Four students have to be chosen 2 girls as the captain and vice-captain and 2 boys as captain and vice-captain of the school. There are 15 eligible girls and 12 eligible boys. In how many ways can they be chosen if Sunita is sure to be the captain?
A teacher prepares a lest. She gives 5 objective type questions out of which 4 have to be answered. Find the total ways in which they can be answered if the first2 questions have 3 choices and the last 3 have 4 choices.
In how many ways can 15 students be seated in a row such that the 2 most talkative children never sit together?
In a school 5 colors are allotted lo each house. If the flag of Tagore House has to be a sequence of three blocks of different colors, then how many flags can they choose from?
Find the number of words which can be formed by using the letters of the word EQUATION if each word has to start with a vowel.
If you join all the vertices of a heptagon, how many quadrilaterals will you get?
