Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -




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Topic review (newest first)

bob bundy
2012-10-13 03:20:08

hi juan

Welcome to the forum.

Have a look at this thread:

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


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

2012-10-13 00:40:26

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

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