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gjjahol
Feb 15, 2011, 11:50 PM
What is the probability that two numbers chosen at random from this group (1, 2, 3, 4, 5) have a product greater than 12?

galactus
Feb 16, 2011, 05:16 AM
There are only 10 total ways to choose 2 items from 5. List them out and see which ones when multiplied are greater than 12.

1,2
1,3
1,4
1,5

And so on. There's 4 of them already. Do any of those have a product > 12? No? Continue listing out the other 6 and see how many have a product > 12.