Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2012-10-12 01:40:26

juan
Guest

Sets

65% of children in a sport club play football, 70% play volley-ball and 75% play basket ball. What is

the minimum number of children playing all the three games, if the total number of children in the

sport  club is 90

#2 2012-10-12 04:20:08

bob bundy
Moderator
Registered: 2010-06-20
Posts: 7,189

Re: Sets

hi juan

Welcome to the forum.

Have a look at this thread:


http://www.mathisfunforum.com/viewtopic.php?id=18146

I have shown there how you can do these 3 set problems.

Bob

ps.  I'm a bit worried about these children as there seem to be half children in some sets.  dizzy  smile


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

Online

Board footer

Powered by FluxBB