1. There r 30 students in a class. 2o study Physics, 15 study Chemistry and 3 study neither Physics nor Chemistry.
*There's supposed 2 b a diagram but idk how to put it here, so i'm just gonna make it out of different symbols so u can understand.
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| | *there r two circles inside joined 2 each other like in a normal venn
| | diagram
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a. Copy n complete the venn diagram to show this in4mation
b. Find the nº of students who study both Physics n Chemistry
c. A student is chosen at random. Find the probability that the student studies Physics bot not Chemistry
2. In another clas of 30 students, 1 student did not watch TV, 4 watched TV in the morning n in the evening while only 23 watched TV in the evening. How many students watched in the morning?
*use a venn diagram when showing the answer
3. An aircraft with 120 passengers flying to Australia stops on the way in Dubai and Hong Kong. 30 of the passengers have been to both countries before, 46 have been to DUbai before n 70 have been to Hong Kong before.
a. How many passengers have visited neither country before?
b. What is the probability that a passenger chosen at random has visited Dubai but not Hong Kong?
*use a venn diagram when showing the answer
4. In a class of 20 students, everyone is studying Mathematics or Physics. 18 students r studying Mathematics. 8 students r studying Physics. How many students r studying Mathematics n Physics?
*use a venn diagram when showing the answer
5. In a survey of 30 people, 26 have a cell phone n 18 have a computer. 4 of the group do not have a cell phone or a computer. How many of the group do not have a cell phone or a computer?
* use a venn diagram when showing the answer
note: if u do not no how 2 put a diagram like i do, then plz just show the working n i'll figure it out from there.
Thk u
