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What is the greatest integer that is the sum of two different prime

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by BTGModeratorVI » Mon May 25, 2020 7:33 am

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What is the greatest integer that is the sum of two different prime numbers, each of which is less than 50?

A. 47
B. 90
C. 94
D. 96
E. 99

Answer: B
Source: GMAT prep
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Re: What is the greatest integer that is the sum of two different prime

by Jay@ManhattanReview » Wed May 27, 2020 10:28 pm
BTGModeratorVI wrote: ↑
Mon May 25, 2020 7:33 am
 What is the greatest integer that is the sum of two different prime numbers, each of which is less than 50?

A. 47
B. 90
C. 94
D. 96
E. 99

Answer: B
Source: GMAT prep
The prime numbers less than 50: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47.

Greatest of them are 43 and 47. Their sum = 43 + 47 = 90.

The correct answer: B

Hope this helps!

-Jay
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Re: What is the greatest integer that is the sum of two different prime

by Brent@GMATPrepNow » Thu May 28, 2020 9:15 am
BTGModeratorVI wrote: ↑
Mon May 25, 2020 7:33 am
 What is the greatest integer that is the sum of two different prime numbers, each of which is less than 50?

A. 47
B. 90
C. 94
D. 96
E. 99

Answer: B
Source: GMAT prep
To maximize the sum, we need to find the biggest prime numbers less than 50.
Those primes are: 43 and 47

So the greatest sum = 43 + 47 = 90

Answer: B

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
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Re: What is the greatest integer that is the sum of two different prime

by Scott@TargetTestPrep » Thu May 28, 2020 3:37 pm
BTGModeratorVI wrote: ↑
Mon May 25, 2020 7:33 am
 What is the greatest integer that is the sum of two different prime numbers, each of which is less than 50?

A. 47
B. 90
C. 94
D. 96
E. 99

Answer: B
Solution:

The two largest prime numbers that are less than 50 are 43 and 47, and their sum is 43 + 47 = 90.

Answer: B

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