Math Brain Challenge

What is the definition of a proportional relationship?

• A proportional relationship is when quantities are unrelated.

• A proportional relationship is when quantities change direction.

• A proportional relationship is when quantities increase at different rates.

• A proportional relationship is a relationship between two quantities where they increase or decrease at the same rate.

Calculate the area of a square with a side length of 5 units.

• 15 square units

• 20 square units

• 25 square units

• 30 square units

If the probability of an event is 0.25, what is the probability of the complementary event?

• 0.1

• 0.35

• 0.75

• 0.5

Define the term 'mean' in statistics.

• The 'mean' in statistics is the middle value in a dataset.

• The 'mean' in statistics is the sum of all values in a dataset.

• The 'mean' in statistics is the highest value in a dataset.

• The 'mean' in statistics refers to the average of a set of numbers.

Simplify the ratio 4:6 to its simplest form.

• 3:4

• 2:3

• 1:2

• 5:6

What is the sum of interior angles in a triangle?

• 270 degrees

• 90 degrees

• 120 degrees

• 180 degrees

If two angles are complementary and one angle measures 30 degrees, what is the measure of the other angle?

• 90 degrees

• 45 degrees

• 120 degrees

• 60 degrees

In a geometric figure, what is the sum of the interior angles of a hexagon?

• 360 degrees

• 720 degrees

• 540 degrees

• 900 degrees

If the probability of an event is 0.5, what is the odds in favor of the event?

• 4

• 3

• 1

• 2

Calculate the median of the following set of numbers: 10, 15, 20, 25, 30.

• 28

• 22

• 20

• 18