Brain Teasers
1000 Prime Numbers
Determine the ones place value of the product of the first 1000 prime numbers. (What number would be in the ones position if you multiplied all of the first 1000 prime numbers together?)
Hint
All you need to know the first three prime numbers.Answer
ZERO. Any numbers multiplied by 2 and 5 (which are prime) result in a zero in the ones place.Hide Hint Show Hint Hide Answer Show Answer
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