Megan writes down a list of five numbers. The mean of her first three numbers is −3. The mean of her first four numbers is 4. The mean of her first five numbers is −5.
What is the difference between her fourth number and her fifth number?
Select one option, then click Submit.
66
55
44
33
22
Select an option, then submit.
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Intermediate Mathematical Challenge 2019 (2019)
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