In a class of 20 students, all those who study Physics also study Mathematics.
9 students study Biology.
5 students study all three subjects.
7 students studying Physics do not study Biology.
1 Biologist studies Mathematics but not Physics.
Everyone in the class studies at least one of these subjects.
How many students study Mathematics?
Answers
Answered by
1
Answer:
answer is there are 13 students study mathematics
Answered by
1
Answer:
5 student all 3 subjects so maths is included then
7 student studying physics so in question they have been give that those study physics they study maths also so 7 +5 =12
Then 1 biology student study maths but not biology so 7+5=13+1=14
Ans =14
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