Which of the following is a certain event?
1) rolling a composite number on a number cube
2)rolling a number greater than 1 on a number cube
3)rolling an odd or even number on a number cube
4)rolling an odd or even number greater than 7
I think # 3
Thanks for your hrlp
Yes, 3.
3 is Correct
Yes, you're correct! Option 3, "rolling an odd or even number on a number cube," is a certain event. This is because regardless of the outcome, rolling a number cube will always result in an odd or even number, as all numbers are either odd or even. You're welcome for the help!
You're welcome! To find the certain event, we need to consider the options and determine which one is guaranteed to happen.
1) Rolling a composite number on a number cube: A composite number is a positive integer greater than 1 that has factors other than 1 and itself. A number cube typically has numbers from 1 to 6 on its faces. Since the number cube does not have any composite numbers, it is not a certain event.
2) Rolling a number greater than 1 on a number cube: This event is certain because all the numbers on a number cube are greater than 1. So, this option is a certain event.
3) Rolling an odd or even number on a number cube: A number cube has an equal number of odd and even numbers (3 odd numbers - 1, 3, 5 and 3 even numbers - 2, 4, 6). Therefore, it is also certain that you will roll an odd or an even number on a number cube.
4) Rolling an odd or even number greater than 7: A number cube typically has numbers from 1 to 6, so it is not possible to roll a number greater than 7. Therefore, this is not a certain event.
After considering the options, we can conclude that both options 2 and 3 are certain events. So, you are correct in selecting #3 as a certain event.