Question

15. In a class of 100 students 90 have
taken mathematics 70 have taken
mathematics but not biology. Find
the number of students who have
taken biology but not mathematics.
Each student has taken either
mathematics or biology or both. *
O 30
O 10
O 15
0 20​

Answer 1

Answer:

20

Step-by-step explanation:

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Answer 2

Answer:

20 is correct answer

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