One evening, a teacher uses a computer program to record each student’s test grade. she then uses the program to calculate each student’s test average for the year. the teacher then plans her lessons for the following week. which of the following best explains how the computer algorithm the teacher? a-it gives the teacher step-by-step directions on how to grade tests. b-it makes a simple task more complex for the teacher. c-it reduces the errors the teacher makes in writing tests. d-it saves time for the teacher so that she can do other tasks.

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?