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Gaxinta

A number N is divisible by 10, 90, 98 and 882 but it is NOT divisible by 50 or 270 or 686 or 1764. It is also known that N is a factor of 9261000. What is N?

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Thirty Six Exactly

The number 12 = 2^2 3 has 6 factors. What is the smallest natural number with exactly 36 factors?

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Factoring Factorials

Find the highest power of 11 that will divide into 1000! exactly.

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Age 11 to 14 Challenge Level:
Use a table of values to keep track of M, D and N as they change.