There are 10 students participating in a spelling bee. in how many ways can the students who go first and second be chosen?

The order matters.

objects can be chosen out of objects, when the order matters, in ways.

So, the answer is ways.

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints