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QOTD#28 Three times the sum of the prime numbers less than
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13 Oct 2016, 13:34
13 Oct 2016, 13:34
2
Expert Reply
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Question Stats:
75% (00:45) correct
24% (00:47) wrong based on 97 sessions
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Quantity A |
Quantity B |
Three times the sum of the prime numbers less than 10 |
The sum of the prime numbers between 20 and 30 |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Drill 1
Question: 13
Page: 284-285
Question: 13
Page: 284-285
Re: QOTD#28 Three times the sum of the prime numbers less than
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13 Oct 2016, 13:38
13 Oct 2016, 13:38
1
Expert Reply
Explanation
The prime numbers less than 10 are 2, 3, 5, and 7—don’t forget, 1 is not prime. Their sum is 17, and 3 × 17 = 51. The only prime numbers between 20 and 30 are 23 and 29, and their sum is 52. Quantity B is greater.
The prime numbers less than 10 are 2, 3, 5, and 7—don’t forget, 1 is not prime. Their sum is 17, and 3 × 17 = 51. The only prime numbers between 20 and 30 are 23 and 29, and their sum is 52. Quantity B is greater.
Re: QOTD#28 Three times the sum of the prime numbers less than
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07 Aug 2024, 10:52
07 Aug 2024, 10:52
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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
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