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.

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step-by-step explanation:

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