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Agrobacterium tumefaciens has been used extensively for genetic engineering of plants.
If 3 pens are drawn at random what is the probability that all are black?
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 ...
In how many different ways can the letters of the word ‘SURGICAL’ be arranged so that the vowels always come together ?
How many 10 digit numbers can be formed using the digits 1, 2, 0, 2, 4, 1, 2, 4, 2, 4 ?
If 2 pens are drawn at random what is the probability that one is black and one is red ?
