If Jason tosses a cube numbered from 1 to 6 what is the Probability that he will not toss a 3?
5/6?
What is the probability that Jason will toss a number less than 7?
6/6?
A box contains 25 cubes If you select one cube the probability of choosing a red cube is 6/25 How many cubes in the box are red?
6?
How many cubes in the box are not red?
19/25?
1.) Yes 5/6
2.) Yes 7/7
3.) Yes six cubes are red.
4.) Yes 19/25
A bag has 20 balls numbered from 1 to 20. If you guess the number of the ball you draw from the bag you win a prize. What is the probability that you will not win a prize?
19/20
To calculate the probability of an event, you need to divide the number of favorable outcomes (the desired outcome) by the total number of possible outcomes.
For the first question, the cube has six faces numbered from 1 to 6, and Jason does not want to toss a 3. So, there are 5 favorable outcomes (any number except 3) and 6 possible outcomes (numbers 1 to 6). Therefore, the probability of not tossing a 3 is 5/6.
For the second question, Jason wants to toss a number less than 7. Since the cube's numbers range from 1 to 6, all the possible outcomes are less than 7. Therefore, the probability of tossing a number less than 7 is 6/6, which simplifies to 1.
Moving on to the third question, we are given that the probability of selecting a red cube is 6/25. Let's assume there are "x" red cubes in the box. The favorable outcomes are the red cubes, which are "x," and the total number of outcomes is the total number of cubes in the box, which is 25. Therefore, we can set up the equation as:
x/25 = 6/25
By cross multiplying, we get:
x = (6/25) * 25
x = 6
So, there are 6 red cubes in the box.
For the fourth question, we can calculate the number of cubes that are not red by subtracting the number of red cubes from the total number of cubes. The total number of cubes in the box is given as 25, and we just found that there are 6 red cubes. Therefore, the number of cubes that are not red is 25 - 6 = 19.
Thus, there are 19 cubes in the box that are not red. The probability of selecting a cube that is not red can be calculated as 19/25.