Students were asked about search engine they used. 90 of them said they used google chrome, 70 used Internet Explorer, 40 used Mozilla Firefox, 30 used Google Chrome and Internet Explorer, 20 used Google Chrome and Mozilla Firefox, 10 used all the 3 search engines.
Use the Venn diagram to answer The following:
1. How many students were surveyed?
2. How many students use d Google Chrome only?
3. How many students used Internet Explorer only?
4. How many used Mozilla Firefox only?
5. How many students used both Internet Explorer and Mozilla Firefox?