A permutation on the set {1, . . . , k} is a one-to-one, onto function on this set. When p is a permutation, p^t means the composition of p with itself t times. Let PERM-POWER = {(p, q, t)| p = q^t where p and q are permutations on {1, . . . , k} and t is a binary integer}. Show that PERM-POWER ∈ P.

Which of the following is true of operations within a spreadsheet program’s built-in functions? a. operations within parentheses, then multiplication and division, and then addition and subtraction are computed. b. operations within parentheses, then addition and subtraction, and then multiplication and division are computed. c. multiplication and division, then addition and subtraction, and then operations within parentheses are computed. d. addition and subtraction, then multiplication and division, and then operations within parentheses are computed

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