Question

100 people were surveyed out of which
60 have watch
62 have laptop
84 have slippers
95 have mobile
Find the minimum number of people who have all 4
items.​

Answer 1

Answer:

Calculate the number of people not having these things

W-100-72=28

BS-100-85=15

BC-100-58=42

R-100-98=2

TOTAL=87

So, there were 87 people who was not wearing one of these. We have 13 people wearing all of these.

Answer is 13.

Answer 2

Answer:

The correct answer is : 1

Step-by-step explanation:

Let A number of people own watches, B number of people own laptops, C number of people own slippers, and D number of people own smartphones. Next, we have

|A| = 60, |B| = 62, |C| = 84, |D| = 95

|A ∩ B ∩ C ∩ D| = |A| + |B| + |C| + |D| - |A ∪ B ∪ C ∪ D|

|A ∩ B ∩ C ∩ D| = 60 + 62 + 84 + 95 - |A ∪ B ∪ C ∪ D|

|A ∩ B ∩ C ∩ D| = 60 + 62 + 84 + 95 - 100 = 101 - 100 = 1

Therefore, the minimum number of people who have all four items is 1.

To learn more about survey, visit:

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https://brainly.in/question/3336247

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