Question 1145040
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Your data is faulty.


41 had iPad + SmartPhone
33 had iPad + Laptop
12 had all three


So, at an absolute minimum, 86 students had iPad.  But your problem statement said 73 students have an iPad.  Impossible for the number of students who only have an iPad to be minus 13.


Correct your data and repost.  Choose ONE of the questions to ask.  One question per post.
								
								
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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