How many of the first 1992 prime numbers have reciprocals less tahn 0.05?

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asked Aug 2, 2019 151k views

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Sinstein · Answer 1 · 2019-08-09T02:02:43+0000

To have a reciprocal less than 0.05, the prime has to be more than 20. There are 8 primes less than 20, so there are 1992 - 8 = 1984 primes in the first 1992 primes that have reciprocals less than 0.05.

How many of the first 1992 prime numbers have reciprocals less tahn 0.05?

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