What is the probability of drawing a club and a 7?

Since there's only one 7 of clubs in the deck, there is only one occurrence of drawing a 7 of clubs. Now the sample space is the total number of ways a card can be drawn from the deck. Since there are 52 cards, there are 52 ways you can draw a card. so the probability is calculated by 1/52.

Read more

You can also ask what is the probability of getting a 7 of clubs?

There is only one card named seven of clubs. Hence, the probability is 1/52. What are the odds of drawing an ace of spades? 1/52 The probability of drawing the ace of spades from a deck of cards is 1/52.

You can also ask what is the probability of choosing a spade in the given card is black in percentage?

By the law of total probability the answer should be 1/2 (12/51) + 1/2 (13/51). Given that the second card is a spade, there are 51 possibilities for the first card, of which 25 are black. Correspondingly, what is spade in math? In this example, the SPADE symbol just means "when I see a SPADE, take the thing to the left and square it, take the thing to the right and square it, add them together, and take the square root". If you just proceed one step at a time (read the other answers for more detail), it's really not so hard!

One may also ask what is the probability of getting a king or a queen?

Hence the probability of getting a king or a queen out of 52 cards is 2/13.