Chapter 1: Q9. (page 36)

One of the polygons below is chosen at random. Find each probability.
P(not a quadrilateral)

Short Answer

Expert verified

The probability of getting a figure that is not a quadrilateral is $\frac{2}{3}$ .

Step by step solution

Step 1. Count the numbers of quadrilaterals.

Note that a quadrilateral is a polygon with four sides.

Among the given figures, there are 2 figures that have four sides hence, are quadrilaterals and the rest 4 figures are not quadrilaterals.

Step 2. Apply the basic formula for probability.

The probability of an event is given by the following formula:

$Probability of an event = \frac{number of favorite outcome}{total outcome}$

Step 3. Write the given information.

The total number of figures is 6.

The number of favorite outcomes is 4 since there are four figures that are not quadrilaterals among the given figures.

Step 4. DESCRIPTION OF STEP.

Substitute the value of the number of favorite outcomes and total outcomes in the formula for probability.

$P (Not a quadrilateral) = \frac{number of favorite outcome}{total outcome} = \frac{4}{6} = \frac{2}{3}$

Hence, the probability of getting a figure that is not a quadrilateral is $\frac{2}{3}$ .

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One of the polygons below is chosen at random. Find each probability.
P(not a quadrilateral)

Short Answer

Step by step solution

Step 1. Count the numbers of quadrilaterals.

Step 2. Apply the basic formula for probability.

Step 3. Write the given information.

Step 4. DESCRIPTION OF STEP.

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One of the polygons below is chosen at random. Find each probability.P(not a quadrilateral)

Short Answer

Step by step solution

Step 1. Count the numbers of quadrilaterals.

Step 2. Apply the basic formula for probability.

Step 3. Write the given information.

Step 4. DESCRIPTION OF STEP.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Pure Maths

Discrete Mathematics

Decision Maths

Applied Mathematics

Mechanics Maths

Statistics

Study anywhere. Anytime. Across all devices.

One of the polygons below is chosen at random. Find each probability.
P(not a quadrilateral)