1.) Suppose that a personal computer system contains choices pertaining to memor
ID: 3021162 • Letter: 1
Question
1.) Suppose that a personal computer system contains choices pertaining to memory size, hard disk size, monitor, and printer. If there are four memory sizes, three hard disk sizes, 2 monitors and two printers, the number of different systems can be computed from?
a.) 4!3!2!2!
b.) 4!3!/2!2!
c.) 4+3+2+2
d.) 4*3*2*2
2.) Suppose that a committee consisting of a chairperson, vice-chairperson, and secretary is to be chosen from twenty workers. The number of ways the committe can be selected can be computed from?
a.) 20 to the 3rd power, i.e. 20*20*20
b.) 20!/(3!20!)
c.) 20!/(3!17!)
d.) 20!/17!
3.) The number of ways that "n" items can be arranged in order is n!?
a.) True
b.) False
4.) The number of ways in which a subset of "r" items can be selected fron "n" items where order of selection is significant(important) is called a combination of n items take r at a time?
a.) True
b.) False
5.) The number of ways in which a subset of "r" items can be selected fron "n" items where order of selection is irrelevant is called a permutation of n items take r at a time?
a.) True
b.) False
Explanation / Answer
1. a) 4!3!2!2! becouse you have to combine it with the others
2.
3. TRUE
4.False (the permutation no combination)
5,FALSE ( the correct answer is combination no permutation)
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