Solve the equation: 3x^2 - 12x + 9 = 0.

• x = 0

• x = 4

• x = 1, x = 3

• x = 2

If a + b = 10 and ab = 21, find a and b.

• a = 6, b = 4

• a = 8, b = 2

• a = 5, b = 5

• a = 7, b = 3

Determine the roots of the equation: x^3 - 6x^2 + 11x - 6 = 0.

• 1, 2, 3

• 2, 3, 4

• -1, 1, 2

• 0, 4, 5

If log(x) + log(x-2) = 1, find x.

• 2 + sqrt(5)

• 3

• 1 - sqrt(11)

• 1 + sqrt(11)

A box contains 5 red and 7 blue balls. What is the probability of drawing 2 red balls without replacement?

• 5/33

• 3/22

• 2/13

• 1/11

In a class of 30 students, 18 like math, 15 like physics, and 10 like both. How many students like only math?

• 12

• 10

• 8

• 5

If the sum of the first n natural numbers is 210, what is n?

• 20

• 15

• 25

• 30

A committee of 4 is to be formed from 10 people. How many different committees can be formed?

• 210

• 180

• 150

• 300

If the average of five numbers is 20, what is the sum of those numbers?

• 80

• 100

• 120

• 60

A train leaves a station and travels at 60 km/h. Another train leaves the same station 30 minutes later at 90 km/h. When will the second train catch up?

• 1 hour after the second train departs

• 30 minutes after the first train departs

• 2 hours after the second train departs

• 1 hour before the second train departs