How many times children breathe per minute?
40 to 50
10 to 20
20 to 30
30 to 40
Children breathe about 20 to 30 times per minute.
a man has 8 children to take them zoo. he takes three of them at a time to the zoo as often as he can without taking the same 3 children together more than once. how many times will he have to go to the zoo? how many times a particular child will go to the zoo