On a camera, what does focus tracking do? a) allow you to quickly switch focus from one subject to another b)let you focus on something far away c)keep the subject sharp as you follow their movement if you have taken a shot of a subject moving towards you that ended up blurred, what mistake might you have made? a) incorrectly focus b) shutter speed not fast enough c) aperture priority not selected

Assignment: permutations use the permutation formula   r ! ! n n p nr   to solve each problem. be sure to show all work leading to your answer. part i: solve real-world permutation problems choose any four (4) of the following five problems to solve. for each problem a) show how the permutation formula can be used to find the answer and b) write a sentence to explain the meaning of the answer for the situation. 1. to register for online banking services at a local credit union, you need to select a four-digit personal identification number, or pin code. the digits cannot be repeated. how many ways are there to arrange four digits out of the numerals 0 through 9 to create a code?