Cho hai tập hợp A m   ( 1;4] và B m m      ( 2;2 2), .  a) Tìm tất cả các tham số m để A B    ?
Tìm tất cả các tham số m để A B  ?

Find the greatest common factor of 28 and 35

50 points! antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?