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Six cards numbered 1 through 6 are placed in a hat. One card is taken from the hat. The unit's digit of the sum of the numbers on the remaining cards are 9. What was the number on the card taken from the hat?
14 years ago

Answers

Reiny
Add up the numbers from 1 to 6

Looks like the sum of the remaining numbers is 19
So what number is missing?
14 years ago

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