How Many Thousands?

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Find possible values of a digit in an eight-digit number when you know one of its divisors.

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Situational Reminders

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Find the smallest positive integer when you know its divisors and remainders.

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Mystery Number

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Given three of its twelve factors, what is the mystery number?

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Combinations

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Find a sequence of calculator key presses that produces a given number in the display.

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Multiple Ages

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Determine my age given that it is a multiple of a particular integer one year and a multiple of a different integer the next year.

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Extended Pythagoras

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Find three special numbers that add up to 365.

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Consecutive Products

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Find consecutive numbers whose product is a particular number.

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Perplexing Properties

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Find a number with these special properties.

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Adding Places

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Determine how many times the digits of each number less than 209 add to 8.

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Balancing Entertainment

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Help Jasmine determine how many CDs, tapes, and videos she can buy.

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