Use the second formula here,Hi Everyone,
Sorry if this is in the wrong place, I'm not very techno-savvy.
Basically I have a small question in some maths work that has absolutely stumped me:
"A survey of 80 ICT users established that:
all of them used at least one of Word, Excel and Access.
10 used all three packages,
34 used Word and Access,
25 used Word and Excel,
59 used Word, 35 used Excel, 52 used Access.
Using a Venn diagram, or otherwise, calculate the number of ICT users in the survey who:
used Word and Access but not Excel;
used Word and Excel but not Access;
used only Word;
used only Excel;
used only Access;
used Word or Access."
Every single time I create the Venn Diagram, I end up with a total of 77 people. As it says everyone uses at least one of the packages so this can't be right.
Any help is much appreciated!