Write an expression for “the difference of 10 and x.”
1 answer:
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Hey there!
<span>The numerator is the top part of the fraction and the denominator is the bottom part of the fraction. </span>
For example, in the fraction , 1 would be the numerator and 2 would be the denominator.
Thank you!
Answer:
Step-by-step explanation:
First we calculate the number of possible ways to select 2 cards an ace and a card of 10 points.
There are 4 ace in the deck
There are 16 cards of 10 points in the deck
To make this calculation we use the formula of combinations
Where n is the total number of letters and r are chosen from them
The number of ways to choose 1 As is:
The number of ways to choose a 10-point letter is:
Therefore, the number of ways to choose an Ace and a 10-point card is:
Now the number of ways to choose any 2 cards from a deck of 52 cards is:
Therefore, the probability of obtaining an "blackjack" is: