Question

Pls complete fast and be sure of ur answer 

Answer 1

The number of students which are either in algebra or physics are 23 which is the second option.

Given that:-

Total number of students = 30

Number of students both in physics and algebra = 4

Total number of students in Physics = 12

Total number of students in Algebra = 19

We have to find the number of students which are either in algebra or physics.

Number of students in physics but not in algebra = 12 - 4 = 8

Number of students in algebra but not in physics =  19 - 4 = 15

We know that:-

Number of students which are either in algebra or physics = Number of students in physics but not in algebra + Number of students in algebra but not in physics

Hence, we can write,

Number of students which are either in algebra or physics = 8 +15 = 23.

We can also do this question using Venn diagram.

To learn more about Venn diagram, here:-

brainly.com/question/1605100

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