Which of the following is a representation of 10! A. 10*9*8*7*6*5*4*3*2*1 B. 10+9+8+7+6+5+4+3+2+1 C. 10-9-8-7-6-5-4-3-2-1

(a) At a glance, determine the digit d so that 64,275,67d is divisible by 4. Is there more than one answer? (b) Can you choose the digit d so that 64,275,67d is divisible by 8 and not 16? O A. The digit d can be 6. Oc. The digit d can be 4 or 8. B. The digit d can be 0, 2, or 6. D. The digit d can be 8. O E. The digit d can be 2 or 6. OF. The digit d can be 0. O G. The digit d can be 2. O H. The digit d can be 4. O 1. The digit d can be 0, 2, 4, 6, or 8. O J. The digit d can be 0, 4, or 8.

Let A = {1,2,3,4,5} (a) How many subsets of A contain even numbers? (B) How many subsets of A contain an even number of elements?

Let A be the set of all divisors of 11 and let B be the set of all divisors of 6. Construct the power set of A - B. Is this the same as the set-difference of the power set A minus the power set of B? Justify your answer.