There are 70 people and 3 clubs M, S, and Z in a company. 18 people joined M, 20 people joined S and 13 people joined Z. If the members of M did not join any other club, at most, how many people of the company did not
join any club?
Answers.
A) 24 B) 26 C) 28 D) 30 E) 32
Answer E.   key is 'atmost' here.   so 18 people joined M.   20 people joined S and 13 people joined Z. to get maximum people who did not join any club, 13 people who joined Z are among 20 people who joined S.   so 20+18= 
<gadget id="calculator">20+18</gadget>
<output>38</output>
38   70-38= 
<gadget id="calculator">70-38</gadget>
<output>32</output>
32
<result>E</result>
There are 70 people and 3 clubs M, S, and Z in a company. 18 people joined M, 20 people joined S and 13 people joined Z. If the members of M did not join any other club, at most, how many people of the company did not
join any club?