A chemist is studying an unknown substance and could break the substance into its elemental components only by using chemical means. Based on this observation, how should the unknown substance be classified?
A. mixture
B. solution
C. impure substance
D. pure substance
Answer (3)
5050 ;
Out of 50 rolls of a **standard **number cube , 25 rolls will result in an **odd **number.
What is the probability?
**Probability **in mathematics is the possibility of an event in time. In simple words how many times does that incident is happening in any given time interval?
A standard number **cube **has 6 faces, numbered 1 through 6. Out of these, there are three **odd **numbers: 1, 3, and 5.
Since there are three odd numbers out of a total of six possible outcomes, the **experimental probability **of rolling an odd number on a standard number cube is:
Experimental **probability **= Number of odd **outcomes **/ Total number of outcomes
Experimental probability = 3/6
Experimental probability = 1/2 or 0.5
This means that in the long run , we can expect half of the rolls of a standard number cube to result in an odd number.
To predict the number of rolls that will result in an odd number out of 50 rolls, we can simply multiply the total number of rolls by the experimental probability:
Number of rolls resulting in an odd number = Total number of rolls x Experimental probability
Number of **rolls **resulting in an odd number = 50 x 0.5
Number of rolls resulting in an odd number = 25
Therefore, we can **predict **that out of 50 rolls of a standard number cube, 25 rolls will result in an odd number.
To learn more about the probability ;
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The experimental probability of rolling an odd number on a standard die is 2 1 . Therefore, if the die is rolled 50 times, about 25 rolls are expected to be odd. This prediction relies on the assumption of fair and unbiased rolling of the die.
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