from 7 gentlemen and 4 ladies, a committee of 5 is to be formed, in how many ways can this be done to include at least one lady?​

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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.