There are four aces and four kings in a standard deck of cards you pick one card at random what is the probability of selecting an ace or a king

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.