Question 1060177
6B
16 O
8 W
30 balls
probability 1 is black is 1-(neither is black+both are black)
neither is (24/30*23/29)=(4/5)(23/29)=92/145 ANSWER b.
both are is (6/30)*(5/29)=(1/5)(5/29)=(1/29) or 5/145
So one of them is =1-97/145, or 48/145. ANSWER a.
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For c, 16/30*8/29=8/15*8/29=64/435