A standard number cube is tossed. What is the probability that the number will be less than or equal to 3?

2 Answers
Mar 10, 2018

P(3 " or less on a die") = 3/6 =1/2

Explanation:

To determine the probability of an event happening, there are two values you need to determine first.

  1. How many possible outcomes are there altogether?
    In this case with a toss of the die, there are 6 outcomes, being the numbers from 1 to 6.

  2. Of the possible outcomes how many of them will meet our conditions? IN this case we want a number equal to or less than 3, ... the numbers 1,2,3. There are 3 desired outcomes.

"Probability" = "number of desirable outcomes"/"total number of possible outcomes"

P(3 " or less on a die") = 3/6 =1/2

Write a probability as a fraction and give in its simplest form.

Mar 10, 2018

1/2

Explanation:

assuming that the numbers on the standard number cube are 1-6, there are 6 possible numbers to get.

the numbers less than or equal to 3, in the range 1-6, are 1,2 and 3.

this means that there are 3 possible numbers to get that are less than or equal to 3.

probability = number of outcomes possible / total number of outcomes

3/6 = 1/2