A football team of 11 players is to be formed from 20 players including 5 defenders and 4 goal keepers. In how many different ways can a team be formed ...
How many words can be formed with the letter of the word ‘FUTURE’ if repetition is not allowed?
If 2 pens are drawn at random what is the probability that one is black and one is red ?
In how many different ways can the letters of the word ‘SURGICAL’ be arranged so that the vowels always come together ?
If 3 pens are drawn at random what is the probability that all are black?
How many 10 digit numbers can be formed using the digits 1, 2, 0, 2, 4, 1, 2, 4, 2, 4 ?
