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Sagot :
The mean, median, and mode of the 5 number 5, 7, 8, a, b. are equal so
the possibilities of a+b is 20.
what is mean?
The" mean" is the" average" you are used to, where you add up all the figures and also divide by the number of figures.
what is median?
The" median" is the" middle" value in the list of figures. To know the median, your figures have to be listed in numerical order from lowest to largest, so you may have to rewrite your list before you can find the median.
what is mode?
The" mode" is the value that occurs utmost often. However, also there's no mode for the list, If no number in the list is repeated.
According to the given Information:
Given numbers are: 5, 7, 8, a, b
Total number =5
Then,
The mean = (5+7+8+a+b) / 5
Mean=(20+a+b) / 5 ------------------ (1)
Median=middle value in the list of figures
Median=8 ------------------(2)
According to the question ,mean and median are equal
Compare equation (1) and (2),
we get
= (20+a+b) / 5=8 20+a+b
=40a+b=20
there is no repetition of any number, so no mode is there
hence, all the possibilities of a+b is 20.
learn more about mean ,median and mode visit:
https://brainly.com/question/452652
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