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In a class of 31 students,16 play football,12 play table tennis and 5 play both games.find the number of students who played at...Asked by Zuleiha
In a class of 31 students, 16 play football ,12 play table tennis and 5 play both games. Find the number of students who play none of the games
Answers
Answered by
Zuleiha
No response, pls need help
Answered by
MagicalMarie
I don't know how this works, I've tried subtracting it and everything. I'll figure it out and respond later.
Answered by
mathhelper
number (football OR tennis)
= number (football) + number (tennis) - number (football AND tennis)
= 16 + 12 - 5
= 23
so 23 play either football or tennis, but there were 31 students.
Then 8 students played neither of the sports.
You can also do this very easily using Venn diagrams.
= number (football) + number (tennis) - number (football AND tennis)
= 16 + 12 - 5
= 23
so 23 play either football or tennis, but there were 31 students.
Then 8 students played neither of the sports.
You can also do this very easily using Venn diagrams.
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