Set 1
n!
What is "n factorial"
3! =
3 x 2 x 1 = 6
In how many ways can 4 distinct objects be arranged in a line? (Answer must be a number)
What is 4! = 24
5!/4!
What is 5
What is 100,000!/99,999!
100,000
What is the probability that an arrangement of EGGS starts with G?
1/2 = 50%
How many arrangements of ELEPHANT start with L?
2520
What is 3
What is the probability that the two middle letters of LONDON (when randomly re-arranged) are NN?
1/15 = 0.067
What is the probability that when LONDON is re-arranged, the O's are together and the N's are together?
2/15
Given that the first two letters of a re-arrangement of LONDON are LO, what is the probability that the remaining four letters will spell LONDON when combined with LO?
1/12