Search Results
Math Topics
Quantitative Literacy
Probability
1
The Fundamental Counting Principle
Consider the California area code 805. Theoretically, how many phone numbers are possible with this area code if the first digit following the area code cannot be zero or one? (Assume all combinations of numbers after the area code are allowed, except the aforementioned zero or one as the first digit.)
Videos Coming Soon
2
Permutations and Combinations
3
Introduction to Probability
Inside a jar there are six ping-pong balls, each showing numbers \(1\) through \(6\). When you draw a ping-pong ball from the jar, what is the probability of drawing
a ball with the number \(5\)?
a ball with an odd number?
a ball with a number other than \(5\)?
Two \(6\)-sided dice are rolled at the same time and the numbers showing are observed. Find the following:
The sample space
\(P(\text{sum}=9)\)
\(P(\text{sum}=11)\)
\(P(\text{the sum is an odd number})\)
\(P(\text{both dice show the same number})\)
If an iPhone user was chosen at random, answer the following questions.
What is the probability that they replaced another iPhone with their new iPhone?
What is the probability that they replaced a Blackberry or an Android with their iPhone?
What is the probability that they did not replace an old iPhone with their new iPhone?
The table shows the length of time it took \(500\) college graduates to obtain their bachelor’s degree. If a graduate from this group is selected at random, find the probabilities of the following events. Give your answers as both reduced fractions and decimals rounded to the nearest hundredth.
The graduate took \(4\) years to complete their degree.
The graduate took more than \(6\) years or less than \(4\) years to complete their degree.
