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CTJan27 Online Math Methods - Counting Techniques Combinations

CTJan27 Online Math Methods - Counting Techniques Combinations

Complete all the Questions

Multiple Choice

  1. What is the value of $\binom{10}{3}$?

  2. A committee of $4$ people is to be chosen from a group of $9$ people. How many different committees can be formed?

  3. From a list of $12$ books, how many ways can you choose $5$ books to read?

  4. How many ways can you choose $2$ cards from a standard deck of $52$ cards?

  5. A pizza shop offers $15$ different toppings. If you want to choose $4$ toppings for your pizza, how many different combinations of toppings are possible?

  6. A committee of $5$ people is to be formed from a group of $8$ men and $6$ women. If a specific man and a specific woman must be on the committee, how many different committees can be formed?

  7. A school needs to select $3$ students for a competition from a class of $20$. If $2$ particular students are ineligible to be selected, how many different groups of $3$ students can be chosen?

  8. A restaurant offers $6$ main courses, $5$ side dishes, and $3$ desserts. How many ways can a customer choose $1$ main course, $2$ side dishes, and $1$ dessert?

  9. There are $7$ points on a plane, no three of which are collinear. How many distinct lines can be drawn by connecting any two points?

  10. There are $8$ points on a circle. How many different triangles can be formed by choosing $3$ of these points as vertices?

  11. A box contains $10$ different colored markers. In how many ways can you select $3$ markers?

  12. A committee of $3$ men and $2$ women is to be formed from a group of $7$ men and $5$ women. How many different committees can be formed?

  13. How many ways can you choose $3$ cards from a standard deck of $52$ cards such that all $3$ cards are spades?

  14. How many ways can you choose $2$ Kings and $1$ Queen from a standard deck of $52$ cards?

  15. A team of $5$ is to be chosen from $6$ boys and $4$ girls. How many teams can be formed if there must be at least $4$ boys on the team?

  16. A committee of $4$ people is to be formed from $5$ teachers and $6$ students. How many ways can the committee be formed if there are at most $2$ teachers?

  17. Given that $\binom{n}{k} = \binom{n}{n-k}$, which of the following is equal to $\binom{15}{12}$?

  18. How many unique sets of $3$ numbers can be chosen from the set $\lbrace 1, 2, 3, 4, 5, 6, 7 \rbrace$?

  19. A coach needs to select $5$ players for a basketball team from a roster of $8$ guards and $6$ forwards. If the team must consist of $3$ guards and $2$ forwards, how many ways can the team be selected?

  20. A box contains $9$ red balls and $7$ blue balls. In how many ways can you select $4$ balls such that at least $2$ of them are red?

  21. A committee of 5 is to be formed from 6 teachers and 8 students. In how many ways can this be done if the committee must include at least 1 teacher and at least 1 student?

  22. A board of directors consists of 12 members. A subcommittee of 5 members is to be formed. If two specific members, Mr. Smith and Ms. Jones, refuse to serve together on the subcommittee, how many different subcommittees can be formed?

  23. From a standard deck of 52 playing cards, a hand of 5 cards is dealt. How many distinct hands contain at most 2 kings?

  24. A robot moves in a grid from point $(0,0)$ to point $(6,4)$. The robot can only move one step at a time, either to the right (R) or up (U). How many distinct paths are there?

  25. A box contains 7 distinct red balls, 5 distinct blue balls, and 4 distinct green balls. In how many ways can a selection of 6 balls be made such that there are at least 2 red balls, at least 2 blue balls, and at least 1 green ball?

  26. If $(n+1)C(n-1) = 28$, find the value of $n$.

  27. How many distinct diagonals can be drawn in a regular polygon with 15 sides?

  28. A committee of 6 is to be chosen from 9 men and 7 women. If the committee must have at least 3 men and at least 2 women, how many ways can the committee be formed?

  29. A set of 5 distinct numbers is to be chosen from the set $\{1, 2, ..., 15\}$. How many such sets can be formed if at least two of the chosen numbers must be prime numbers?

  30. A committee of 4 women and 3 men is to be chosen from 9 women and 7 men. In how many ways can this be done if two particular women refuse to serve together on the committee?