QUESTION
In a group of 50 people, two tests were conducted, one for diabetes and one for blood pressure. 30 people were diagnosed with diabetes and 40 people were diagnosed with high blood pressure. What is the minimum number of people who were having diabetes and high blood pressure.
No copied answer plz.
Answer fast plz
Answers
Answered by
9
Answer:
Let A be the set containing people
diagnosed with diabetes and B be
the set containing people diagnosed
- with Blood pressure.
We know set formula
n( A ∪ B ) + n( A ∩ B ) = n(A)+n(B)
n( A ∩ B )= x are people having both
n( A ∪ B ) are total people
n( A ) is people having diabetes and
n(B) is having blood pressure.
⇒50+x=40+30
x=20
Thus, there should be minimum of 20 people having both.
hope it helps!
Answered by
1
Answer:
The answer is 20
Step-by-step explanation:
Similar questions