Brainxercise!

1. Supposed you secured your bike using a combination lock. Later you realized that you forgot the 4-digit code You only remembered that the code contains the digits 1, 3, 5, and 7. How many possible codes are there?

• 4

• 8

• 12

• 24

2.Two lottery tickets are drawn from 20 for first and second prizes, find the number of sample points in the sample space.

• 120

• 240

• 380

• 580

 

3. In how many ways can 5 people be arrange themselves in a row for picture taking ?

• 24

• 120

• 240

• 360

4. In how many ways can six students pose for a photograph with only 4 seats available?

• 360

• 240

• 120

• 24

1. What is P (6,2) ?

• 30

• 60

• 90

• 120

1.Suppose that in a certain association, there are 12 elected members of the Board of Directors. In how many ways can a president, a vice president, a secretary, and a treasurer be selected form the board?

• 11, 880 ways

• 2,970 ways

• 8,910 ways

• 5,940 ways

2. 10 students have appeared in a test in which the top three will get a prize. How many possible ways are there to get the prize winners ?

• 360 ways

• 270 ways

• 720 ways

• 5,040 ways

3. If 7 pizza toppings are available, how many ways can you choose 2 toppings?

• 41

• 42

• 43

• 44

4. The members of the Philippine High School track team want to choose a team captain and someone to organize their equipment. In how many ways can two people be chosen from a team of 10 girls?

• 100 ways

• 81 ways

• 1,000 ways

• 90 ways