If a man has six different sportshirts and four different  pairs of slacks, how many different combinations can he wear?

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A man has 8 pairs of pants, 12 shirts, 15 ties, and 6 sport coats. If he wears one of each, how
many different outfits can he wear?

In how many ways different ways can the five letters a,b,c,d, and e be arranged?

Answer is: 5! = 120 ways

In how many ways different ways can the five letters a,b,c,d, and e be arranged?

Answer is: 5! = 120 ways

Test the standard normal pseudo-random number generator on your computer by generating a sample of size 10,000 and drawing a normal quantile plot. How straight does the plot appear to be?