Question 855853
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Hi,
1 and 2 identical
12 face cards (K, Q, J in each of the 4 suits)
card drawn
P(facecard) = 12/52
odds in favor : 12:40, odds against:   40:12
7) 36 marbles: 1 gold, 9 silver  and 26 black marbles.
E = 3(1/36) + 2(9/36) - 1(26/36) = $3/36 + $18/36 - $26/36 = -$5/36 = -$0.14 
7) 36 marbles: 1 gold, 8 silver  and 27 black marbles.
E = 3/36 + 2*8/36 - 27/36 = -$8/36 = -$0.22