Asked by wan

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
Answered by Steve
28 play some sport

19+21-both=28
both = 12

tennis only = 19-12 = 7
Answered by Joe
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?
Answered by Valerie nolan
Where did u get the 12 from
Answered by diana
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?