AMC 8 Daily Practice Round 5
Complete problem set with solutions and individual problem pages
A computer can do operations per second. Then, it can do operations in seconds.
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A total of bicycles and tricycles are in the garage. If there are wheels in total, there should be tricycles in the garage.
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There are some odd numbers: , , , , and . If you choose one randomly, the probability that you get a prime number is .
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There are odd prime numbers among to which are and . Thus, the probability is .
After removing two adjacent odd numbers from natural numbers , the average of the remaining numbers is . The product of the two numbers removed is .
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, so the two odd numbers are and , which have a product of
Fill the seven odd numbers in each circle so that the sum of each three numbers in a line can be . Which number should be filled in the central circle?
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