Respuesta :
13
+
4
−
1
52
=
16
52
=
4
13
≈
0.3077
Explanation:
In a standard deck of cards, there are 52 cards. They are broken down into suits (4 of them: Spades, Hearts, Diamonds, Clubs) of 13 cards each. Each suit has 13 ordinal cards (A, 2 through 10, Jack, Queen, King).
Here we're asked to draw a card at random and find the probability of drawing either a diamond or a 7.
With probability, we look at the fraction of ways we can achieve some condition (the numerator) over the number of ways we can do something (the denominator).
Our denominator here is 52 - the number of cards from which we can pull 1.
Our numerator is both all the diamonds, 13 cards, and all the sevens, 4 cards, but we need to subtract 1 to account for the double counting of the 7 of diamonds.
The probability of drawing a jack or ten from a deck of cards is 2/13.
The probability of drawing a jack or a diamond is 15/52.
How to calculate probability?
Fact: A deck of cards has 52 cards and in it:
- 13 cards of diamond
- 13 cards of heart
- 13 cards of clubs
- 13 cards of spade
Another classification:
- 4 cards each of A,2,3,4,5,6,7,8,9,10,king,queen and jack
- And those 4 cards consist of a diamond, heart, club and spade card.
Now coming to the question:
- We have 4 jack card and 4 10 cards, therefore total cards =8
Probability: Desired outcomes/total outcome
         =8/52
         =2/13
- We have 13 diamond cards( in which 2 jack cards are already included) and another 2 jack cards.
therefore, total cards desired=13+2=15
Probability:15/52
To solve more such problems refer:https://brainly.com/question/5858025
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