Question 482697: 1)How many 4-digit numbers can be made using 0;2;3;5;6;9 if no repeats are allowed?
2)Seven students are asked to line up for a photo.If the students Jack and Jill are both in the photo but do not want to stand together, then what is the number of different line-ups possible?
3)A child must select 8 toys from her toy box, containing ten toys, to bring into the car for a long distance trip. One hour into the trip she throws one of the toys out of the left window and another toy out of the right window. how many different ways can the events discribed occur?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! There are four green blocks and four red blocks in a bag. Two blocks are selected at random. What is the probability that they are both red?
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# of ways to get 2 red: 4C2 = 6
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# of ways to pick 2 randomly: 8C2 = 28
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P(pick 2 red) = 6/28 = 3/14
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Cheers,
Stan H.
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