Tag Archives: combination

What Number am I? – Square, cube, prime digits

Math Teaser I am a 3 digit number whose product of my digits is equal to 144. Of my 3 digits, one is a cube, one is a square, and one is a prime. If the six numbers that meet these criteria are listed in increasing order, I am fifth in the list.

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What Number am I? – Combination of digits

Math Teaser I am 3 digits. My digits add up to 10. The product of my digits is 20. I am an odd number. The digit in the hundreds place plus the digit in the tens place equals the digit in the ones place. The smallest digit is in the middle.

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Two Coins

I have two US coins that combine to total 35 cents. One is not a dime. What are the coins?

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A Dice Combination Problem

If you have two 6-sided dice, numbered 1-6, how many dice combinations are there that do not include the number 5? Note that a 1 and 6 and a 6 and 1 with the two dice are counted as separate dice combinations.

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