There are 10students in a class: 7 boys and 3 girls. If the teacher picks a group of 4 at random, what is the probability that everyone in the group is a boy?

7/40

Step-by-step explanation:

that probavility of taking a boy at random is 7/10, and to take four boy u must divided 7/10 by 4 which is the number of boys your saying and so the answer is 7/40

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.

not sure but it may be b, as i said i'm not sure.