Me! 5. find the number of two-letter permutations of the letters. q, i, e, r, t, y, u 5,040 1,208 14 42

42

Step-by-step explanation:

The permutation for that set of data looks like this:

The formula looks like this:

which of course simplifies to

which further simplifies down to the most basic simplification:

since the 5*4*3*2*1 that goes after the 6 in the numerator cancels with the 5*4*3*2*1 in the denominator.

You could also check this on your calculator.  Hit "math", then arrow over to "Prob" and it's under nPr.

entering that problem on the tube might get you an answer