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Bunuel
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In a social group 62 members enjoy dancing and 28 members enjoy hiking 29 Nov 2018, 00:40
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

5% (low)

Question Stats:

96% (01:13) correct 4% (02:48) wrong based on 82 sessions

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In a social group 62 members enjoy dancing and 28 members enjoy hiking. If each of the 75 members in the group enjoys dancing or hiking, how many members enjoy both dancing and hiking?

A. 13
B. 15
C. 28
D. 34
E. 47
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B
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KSBGC
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In a social group 62 members enjoy dancing and 28 members enjoy hiking 29 Nov 2018, 06:40
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Bunuel
In a social group 62 members enjoy dancing and 28 members enjoy hiking. If each of the 75 members in the group enjoys dancing or hiking, how many members enjoy both dancing and hiking?

A. 13
B. 15
C. 28
D. 34
E. 47
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Total = A + B - both + Neither

75 = 62 + 28 - both + neither

Both = 90 - 75 = 15

B is the correct answer.
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In a social group 62 members enjoy dancing and 28 members enjoy hiking 30 Nov 2018, 11:55
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Bunuel
In a social group 62 members enjoy dancing and 28 members enjoy hiking. If each of the 75 members in the group enjoys dancing or hiking, how many members enjoy both dancing and hiking?

A. 13
B. 15
C. 28
D. 34
E. 47
Show more


Really a great question ,, I solved it using 2x2 matrix.. attached. IMO B 15 is correct
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File comment: 2x2 matrix
Graduate matrix 2x2.xlsx [30.19 KiB]
Downloaded 88 times

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In a social group 62 members enjoy dancing and 28 members enjoy hiking 26 Mar 2023, 23:41
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"Dark matter is one of the most mysterious and perplexing phenomena in modern physics. It is an invisible form of matter that does not emit, absorb, or reflect light, making it impossible to observe directly. However, its presence can be inferred from its gravitational effects on visible matter, such as stars and galaxies. Scientists estimate that dark matter makes up about 85% of the matter in the universe, yet its nature remains a mystery. Scientists have proposed a number of theories to explain dark matter, including the possibility that it is composed of exotic particles that do not interact with light or other forms of electromagnetic radiation. Other theories suggest that dark matter could be composed of black holes, axions, or other forms of undiscovered matter. While the precise nature of dark matter remains a mystery, its gravitational effects have been essential for explaining the large-scale structure of the universe. Understanding dark matter is a key challenge for modern physics, and its discovery could have profound implications for our understanding of the universe and the fundamental laws of physics." What is dark matter and why is it important in modern physics?

Dark matter is a visible form of matter that interacts with light and other electromagnetic radiation, and it is important for explaining the structure of the universe.

Dark matter is an invisible form of matter that makes up 85% of the matter in the universe, and it is important for explaining the gravitational effects on visible matter.

Dark matter is a hypothetical form of matter that has never been observed, and it is not important for understanding the universe.

Dark matter is a form of energy that makes up 85% of the universe, and it is important for explaining the expansion of the universe.
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