A person has 12 friends out of which 7 are relatives. In how many ways can he invite 6 friends such that at least 4 of them are relatives?
Find the quantity of arrangements of the letters of the word INDEPENDENCE if all the vowels always occur together?
Find the number of words that can be formed by using all letters of the word ' FRIDAY', if order of vowels remains same.
From 6 officers and 8 Jawans, in how many ways can 5 be chosen to include exactly 3 officers?
Out of 6 men and 3 women a committee of 3 members is to be formed so that it has 2 men and 1 woman. In how many different ways can this be done?
There are 10 boys and 15 girls in the commerce class. Three students are selected at random. Find the probability that 2 girls and 2 boys are selected.
In how ways can the selection be made so that a particular member is always excluded?
A three-letter word is to be formed such that the first and last letters are consonants and the middle letter is a vowel. How many such words can be for...
In an examination of 5 subjects, it is mandatory for a student to pass in each subject. In how many ways can she fail?
A Consignment of 12 mobile phones contains 4 defectives. The mobile phones are selected at random one by one and examined. The ones examined are not pu...
