Pre-Evaluation

1. It is a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter?

• a. Combination

• b. counting techniques

• c. permutation

• d. probability

2. There are 10 identified points on a number line. How many possible drawn using the given points? Which of the following combination notation will represent the problem?

• a. ₂C₁₀

• b. ₁₀C₂

• c. C(10, 10)

• d. C(2, 10)

3. C (n, n) = ______.

• a. N

• b. r

• c. 1

• d. cannot be determined

4. If C(n,r) = 35, which of the following are possible values of n and r?

• a. n=6, r=4

• b. n=7, r=3

• c. n=8, r=3

• d. n=9, r=2

5. Evaluate C(9,4)=_____

• a. 3024

• b. 924

• c. 126

• d. 76

6. In a 10-item Mathematics problem-solving test, how many ways can you select 5 problems to solve? Which of the following notation will represent the problem?

• P(10, 5)

• ₅C₁₀

• ₁₀C₅

• P(5, 10)

7. Evaluate C(9, 9)=________

• 2

• 1

• 0

• cannot be determined

8. The word Combination is best described from which of the following?

• arrangement of an object

• selection of an object

• tendency of an object to be chosen

• all of the above

9 . Which of the following illustrates ₂₅C₈?

• 
• 
• 
• 

10. Six points lie on a circle. How many triangles can be drawn using these points as vertices?

• 5

• 10

• 15

• 20