# Cards

The player gets 8 cards of 32. What is the probability that it gets
a) all 4 aces
b) at least 1 ace

Result

a =  0.195 %
b =  70.451 %

#### Solution:

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

#### To solve this example are needed these knowledge from mathematics:

Would you like to compute count of combinations?

## Next similar examples:

1. Cards
Suppose that are three cards in the hats. One is red on both sides, one of which is black on both sides, and a third one side red and the second black. We are pulled out of a hat randomly one card and we see that one side of it is red. What is the probabi
2. One green
In the container are 45 white and 15 balls. We randomly select 5 balls. What is the probability that it will be a maximum one green?
3. Balls
The urn is 8 white and 6 black balls. We pull 4 randomly balls. What is the probability that among them will be two white?
4. Class - boys and girls
In the class are 60% boys and 40% girls. Long hair has 10% boys and 80% girls. a) What is the probability that a randomly chosen person has long hair? b) The selected person has long hair. What is the probability that it is a girl?
5. Balls
From the urn in which are 7 white balls and 17 red, gradually drag 3-times without replacement. What is the probability that pulls balls are in order: red red red?
6. Normal distribution GPA
The average GPA is 2.78 with a standard deviation of 4.5. What are students in the bottom the 20% having what GPA?
7. A pizza
A pizza place offers 14 different toppings. How many different three topping pizzas can you order?
8. Theorem prove
We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
9. Balls
We have n identical balls (numbered 1-n) is selected without replacement. Determine 1) The probability that at least one tensile strength number coincides with the number of balls? 2) Determine the mean and variance of the number of balls, which coincides.
10. A book
A book contains 524 pages. If it is known that a person will select any one page between the pages numbered 125 and 384, find the probability of choosing the page numbered 252 or 253.
11. Calculation of CN
Calculate: ?
12. Trinity
How many different triads can be selected from the group 43 students?
13. Fish tank
A fish tank at a pet store has 8 zebra fish. In how many different ways can George choose 2 zebra fish to buy?
14. Examination
The class is 21 students. How many ways can choose two to examination?
15. Blocks
There are 9 interactive basic building blocks of an organization. How many two-blocks combinations are there?
16. Combinations
From how many elements we can create 990 combinations 2nd class without repeating?
17. Combinations
How many elements can form six times more combinations fourth class than combination of the second class?