Question

Just to need solve this asap

which value represents (A u B)



pls don't answer randomly for points

Answer 1

Answer: 55

Explanation:

Given

Values are presented in the Venn diagram

No of left-handed students
`n(A)=25`

No of vegetarians students
`n(B)=45`

Students who are left-handed and vegetarian is given by
`n(A\cap B)=15`

`n(A\cup B)` is given by
`n(A\cup B)=n(A)+n(B)-n(A\cap B)`

Put the values

`n(A\cup B)=25+45-15\\n(A\cup B)=55`