Question

a bag contains 6 red checkers and 4 black checkers.joani will select 2 checkers and wants hey probability of success to be 1/3.which outcomes would give that probability?
could be RR ---> (6/10)(5/9) = 30/ 90 = 1/3

I think we have a winner!

how about BB ----> (4/10)(3/9) = 12/90 ≠ 1/3
how about RB --- > (6/10)(4/9) = 24/90 ≠ 1/3
how about BR , same as RB

looks like RR, both red

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