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Earn +20 ptsQ: Why did Eratosthenes discover the sieve?
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What are you filtering with sieve of eratosthenes?
The Sieve of Eratosthenes filters numbers, letting the composites fall through while the primes remain.
When was the sieve of eratosthenes invented?
It was around 200 BC.
How many even prime numbers are there in a sieve of Eratosthenes?
One
What did eratosthenes devise for locating with relative efficiency prime numbers?
A sieve.
What are the crossed out numbers above one called on a sieve of Eratosthenes?
composite numbers
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