The probability, if you draw 40 cards, without replacement, is 1. That is, it is a certainty.
The probability on a single random draw is 1/4.
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There are only 4 suits in an ordinary deck of playing cards. The probability of drawing a heart is 1 in 4, or 0.25.
The probability of drawing the queen of hearts is 1 in 52, or about 0.01923.
1 in 52
There are 13 hearts in a 52 card deck so the probability of drawing a heart is 13/52 or 1/4.
There are 52 cards in a deck with no jokers. There are 13 hearts in such a deck so the probability of drawing a heart is13/52