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Snehaaaaa
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Set S consist of the first 10 prime numbers. For how many pair of 26 Oct 2023, 12:14
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C
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55% (hard)

Question Stats:

63% (01:35) correct 37% (01:31) wrong based on 247 sessions

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Set S consists of the first 10 prime numbers. For how many pairs of prime numbers is the positive difference equal to 4??

A. 1

B. 3

C. 4

D. 5

E. More than 5
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C
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smeet_up
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Set S consist of the first 10 prime numbers. For how many pair of 26 Oct 2023, 12:43
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How is the answer C?

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Oluseghun
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Set S consist of the first 10 prime numbers. For how many pair of 26 Oct 2023, 21:44
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smeet_up
How is the answer C?

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1 IS NOT A PRIME NUMBER
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gerardosb95
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Set S consist of the first 10 prime numbers. For how many pair of 04 Nov 2024, 19:26
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List 10 first prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29.

Only pair with a difference of 4 is 23-19 and 11-7, but you also have to consider the case 19-23 and 7-11.

So 4 possible possitive difference of 4.
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Set S consist of the first 10 prime numbers. For how many pair of 06 Nov 2024, 01:34
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The question asks for only positive differences. In fact the 4 differences are:
7-3 = 4
11-7 = 4
17-13= 4
23-19= 4
gerardosb95
List 10 first prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29.

Only pair with a difference of 4 is 23-19 and 11-7, but you also have to consider the case 19-23 and 7-11.

So 4 possible possitive difference of 4.
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Set S consist of the first 10 prime numbers. For how many pair of 06 Nov 2024, 16:00
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Oluseghun
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How is the answer C?

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1 IS NOT A PRIME NUMBER
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lmao i am dumb...my mistake as well
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Set S consist of the first 10 prime numbers. For how many pair of 21 Feb 2026, 00:02
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