Question

hi guys can u help me about Basic Set Operation, and this is the problem: The Science teacher conducted a survey in her class. she found out that 19 students have a brother, 15 students have sister, 7 students have a both brother and sister and 6 students do not have any siblings at all. How many students are their in her class? guys pls help me.. thanks alot..

Answer 1

\(\Huge{\color{red}{\bigstar}\color{blue}{\bigstar}\color{green}{\bigstar}\color{yellow}{\bigstar}\color{orange}{\bigstar}\color{red}{\bigstar}\color{blue}{\bigstar}\color{green}{\bigstar}\color{yellow}{\bigstar}\color{orange}{\bigstar}\color{red}{\bigstar}\color{blue}{\bigstar}\color{green}{\bigstar}\color{yellow}{\bigstar}}\\\color{white}{.}\\\Huge\color{blue}{\mathfrak{~~~~Welcome~to~OpenStudy!~\ddot\smile}}\\\color{white}{.}\\\\\Huge{\color{red}{\bigstar}\color{blue}{\bigstar}\color{green}{\bigstar}\color{yellow}{\bigstar}\color{orange}{\bigstar}\color{red}{\bigstar}\color{blue}{\bigstar}\color{green}{\bigstar}\color{yellow}{\bigstar}\color{orange}{\bigstar}\color{red}{\bigstar}\color{blue}{\bigstar}\color{green}{\bigstar}\color{yellow}{\bigstar}}\)

Answer 2

You probably didn't notice, but you posted your \(\large\sf\color{blue}{\underline{\href{ /study#/groups/mathematics}{Mathematics }}}\) question in the Chemistry section.
Next time when you ask a question, check if you're in the right section :)

Answer 3

you can do it in several ways, the easiest is to draw a venn diagram

Answer 4

Please post your math q's in the math section next time.

Answer 5

Hi aaronq, thanks so much for ur best answer :-)

Answer 6

no problem!

Answer 7

^_^