How many four digit numbers can be formed from the digits 1, 3, 5, 7 and 9 if no digit may be repeated in a number

where is the rest of the

step-by-step explanation:

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.