For a printed circuit board, there are a total of thirteen different locations to attach an electronic component. (a) Assuming there are five different electronic components to be placed on the circuit board, in how many different ways can these five components be placed on the circuit board? 7 8 1 3 6 12 2 9
(b) Now, assuming the circuit board has only five different locations to attach a component. How many different ways there are to place five out of thirteen different electronic components on the circuit board? Comment on the number of possibilities under (a) and (b).