5. Which of the following is a certain event?
A. Rolling a composite number on a number cube
B. Rolling a number greater that 1 on a number cube**
C. Rolling an odd or even number on a number cube
D. Rolling a odd or even number greater than 7
I think it is B. because it is difficult to roll a 1 and a 6 on most number cubes.
I think C. then... right?
Because all numbers are either odd or even, so it makes the most sense
I think C! :-)
Thanks :3
No problem and your welcome! :-D
To determine which of the options is a certain event, we need to consider which event is guaranteed to happen.
A. Rolling a composite number on a number cube:
- A composite number is any number greater than 1 that can be divided evenly by numbers other than 1 and itself.
- On a standard number cube, the numbers are 1, 2, 3, 4, 5, and 6.
- The only composite numbers on a number cube are 4 and 6.
- Rolling a composite number is not certain, as it is possible to roll a prime number such as 2 or 3.
B. Rolling a number greater than 1 on a number cube:
- This event is certain because there are no numbers less than or equal to 1 on a standard number cube.
- Rolling a number greater than 1 is guaranteed to happen.
C. Rolling an odd or even number on a number cube:
- This event is not certain as it is possible to roll an odd number or an even number.
- Both odd and even numbers are present on a standard number cube.
D. Rolling an odd or even number greater than 7:
- This event is not certain as it is not possible to roll a number greater than 6 on a standard number cube.
- Since the numbers on a number cube range from 1 to 6, it is not possible to roll a number greater than 6.
Based on the above analysis, option B, "Rolling a number greater than 1 on a number cube," is the certain event.
is every number greater than one?
No.
Think a little more on it.