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In this lesson, we will learn how to find the number of outcomes and the probability using combinations.

Q1:

Which of the following represents the number of ways in which the letters of the word “zebra” can be rearranged?

Q2:

A team of four is to be randomly selected from a group of ten boys and ten girls. Determine the probability that a team will contain only girls.

Q3:

A computer generates four-digit codes using the numbers 0–9 with no repeated digits. How many unique codes can be generated?

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