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To find the expected value of the bet, we first need to find the probability of drawing three face cards in succession.
There are 12 face cards in a standard deck of 52 cards. After drawing one face card, there are 11 face cards left in a deck of 51 cards. After drawing the second face card, there are 10 face cards left in a deck of 50 cards.
Therefore, the probability of drawing three face cards in succession is (12/52) * (11/51) * (10/50) = 0.01294.
Now we can calculate the expected value of the bet:
(0.01294 * $40) - (0.98706 * $10) = $0.52
Therefore, the expected value of the bet is $0.52.