A pinochle deck consists of 48 cards. Eight of these cards are aces (2 aces per suit * 4 suits = 8 aces). So, for a random drawing from a complete pinochle deck, the probability of drawing an ace is 8/48 = 1/6.
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The probability of drawing an Ace in a standard deck of 52 cards is 4 in 52, or 1 in 13, or about 0.07692.
Since there are 4 aces is a normal deck of 52 cards, the probability of drawing an ace is 4 in 52, or 1 in 13.
Probability of not drawing an ace equals one minus the probability of drawing an ace. The probability of drawing an ace is 4/52 or 1/13. So the probability of not drawing an ace on one draw is 1 - 1/13 or 12/13 or 0.9231 (92.31%).
The probability of drawing an Ace or a Deuce from a standard deck of 52 cards is 8 in 52, or 2 in 13, or about 0.154.
The probability of drawing an Ace from a standard deck of 52 cards is 4 in 52, or 1 in 13.