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26 Dec 2013, 09:02
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
73% (01:00) correct
27%
(01:06)
wrong
based on 3188
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If there are 664,579 prime numbers among the first 10 million positive integers, approximately what percent of the first 10 million positive integers are prime numbers?
(A) 0.0066%
(B) 0.066%
(C) 0.66%
(D) 6.6%
(E) 66%
(A) 0.0066%
(B) 0.066%
(C) 0.66%
(D) 6.6%
(E) 66%
26 Dec 2013, 09:02
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SOLUTION
If there are 664,579 prime numbers among the first 10 million positive integers, approximately what percent of the first 10 million positive integers are prime numbers?
(A) 0.0066%
(B) 0.066%
(C) 0.66%
(D) 6.6%
(E) 66%
We need to find 664,579 is what percent of 10 million: \(\frac{664,579}{10,000,000}*100\approx{6.6%}\).
Answer: D.
If there are 664,579 prime numbers among the first 10 million positive integers, approximately what percent of the first 10 million positive integers are prime numbers?
(A) 0.0066%
(B) 0.066%
(C) 0.66%
(D) 6.6%
(E) 66%
We need to find 664,579 is what percent of 10 million: \(\frac{664,579}{10,000,000}*100\approx{6.6%}\).
Answer: D.
General Discussion
26 Dec 2013, 21:00
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664579=x/100 * 10,000,000 = approx. 6.6%
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