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40 Answered Questions for the topic Combinatorics

Combinatorics Math Probability

10/11/16

combinatorics and probability

A committee of 6 people is chosen from 8 women and 8 men. How many different committees are possible that consists of 3 women and 3  men ?
Combinatorics Geometry Probability

10/11/16

combinatorics and probability

SEVEN DISTINCT POINTS ARE DRAWN ON A CIRCLE. HOW MANY DIFFERENT TRIANGLES CAN BE DRAWN IN WHICH EACH VERTEX OF THE TRIANGLE IS AT 1 OF THE 7 POINTS?
Combinatorics

07/05/16

Combinatorics in a Poker Hand

Let's say I make a big bet in a poker game.  I have 2 other opponents in the hand.  One opponent will call me 8% of the time.  The second opponent calls 10% (let's just assume for simplicity that... more
Combinatorics Probability

07/01/16

Probability Combinatorics: Balls in a Bag

There's 14 balls in a bag. 3 of them have a prize, 11 of them do not. You get three chances to pick a ball out of the bag. After each pull, the ball you pulled does not go back into the bag,... more
Combinatorics Probability Math Help

04/28/16

Probability with Combinatorics

Beth and Shanya each purchase one raffle ticket. If a total of eleven raffle tickets are sold and two winners will be selected, what is the probability that both Ben and Shanya win?
Combinatorics

12/15/15

Number of possible 2- and 3-letter combinations from a set of 6, disallowing certain letters to be used together?

Say we have a set of 6.   A B CX Y Z   These letters are arranged in a hexagon. We can have the letters in subsets of 1, 2, or 3, but the same letter cannot repeat in a subset, and each... more
Combinatorics

10/25/15

A student club with 30 members need to chose officers. There are five officer positions and no member can occupy two positions at the same time. How many poss

 A student club with 30 members need to chose officers. There are five officer positions and no member can occupy two positions at the same time. How many possible slates of candidates are... more
Combinatorics

09/15/15

A school district is going to hire a soccer coach and and assistant couch. In how many ways can the selection be made if 14 equally qualified people apply

A school district is going to hire a soccer coach and and assistant couch. In how many ways can the selection be made if 14 equally qualified people apply
Combinatorics

09/15/15

A club consisting of 5 men and 8 women will choose a committee of 4. In how many ways can the committee be chosen if it must contain at least 1 man?

A club consisting of 5 men and 8 women will choose a committee of 4. In how many ways can the committee be chosen if it must contain at least 1 man?
Combinatorics

09/08/15

Using the digits from this set {1,2,3,4,5,6,7} how many different 3 digit numbers can be formed if digits can be repeated and it must be even

Using the digits from this set {1,2,3,4,5,6,7} how many different 3 digit numbers can be formed if digits can be repeated and it must be even
Combinatorics

11/05/14

Using the digits 0,1,2,3,4 and 5 without repetition, How many different six-digit numbers can you make in which all of the even digits are adjacent?

I need the preferably by tomorrow as this is an assignment :)
Combinatorics

11/04/14

At a party with 16 guests, every person shakes hands with 3 other guests. How many handshakes take place?

 The answer is not 6 choose 3. I need the answer by tomorrow.

How many positive 10-digit integers are there with the property that for each digit N, the number of adjacent N's is at most N?

How many positive 10-digit integers are there with the property that for each digit N, the number of adjacent N's is at most N?
Combinatorics

09/08/14

Finite help! Combinatorics: I need help with this question! I've tried it multiple times but I don't think I came up with the right answer

Using digits from this set {1,2,3,4,5,6,7}, how many different 3 digit numbers can be formed if digits cannot be repeated and the 3 digit must be odd?   I came up with 36 as an answer and I don't... more
Combinatorics

05/19/14

A combinations lock has three numbers in the combination, each in the range 1 – 50.

A combinations lock has three numbers in the combination, each in the range 1 – 50. i. How many of the combinations have the first and second number matching? ii. How many of the combinations have... more
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