Posted by wan on Saturday, November 10, 2012 at 10:24am.
in a class of 38 children,19 play tennis, 21 play squash and 10 play neither sport. (1)how many children play both sports?(2)how many children play only tennis

math  Steve, Saturday, November 10, 2012 at 10:48am
28 play some sport
19+21both=28
both = 12
tennis only = 1912 = 7

math  Joe, Friday, December 7, 2012 at 4:06pm
Isn't 19 + 21 + 40 which is more than the amount of children in the class? Then you add 10 more that don't play it's 50. So how is the class total 38 as implied?

math  Valerie nolan, Tuesday, May 6, 2014 at 2:43pm
Where did u get the 12 from

math  diana, Tuesday, January 5, 2016 at 4:33pm
there are 4 green marbles,5 blue marbles,and 6 purples marble.
1. What the probability of picking a red marble, not replacing it, then picking a purple marble?
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