math word problem- probability?

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its a word problem there are three independent baseball catchers catching baseballs the 1st cather has the probability of catching 2/3 the probability of the 2nd cather is 1/4 and the probability of of the 3rd is 3/8 whats the probability that at least one of the three is going to catch a ball ? at least 2 of the 3 is going to catch the ball?

Read more here: http://answers.yahoo.com/question/index?qid=20090507213836AA2wfOo