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Start learning 50% faster. Sign in nowIf 2 pens are drawn at random what is the probability that one is black and one is red ?
How many 10 digit numbers can be formed using the digits 1, 2, 0, 2, 4, 1, 2, 4, 2, 4 ?
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 3 pens are drawn at random what is the probability that all are black?