For any two numbers a and b, a? b = (a + b)(a − b). For example, 10? 5 = (10 + 5)(10 − 5) = (15)(5) = 75. The value of 7?
5 is43.
(A) 2
(B) 12
(C) 24
(D) 36
(E) 48
- What is the greatest integer less than
(F) 9
(G) 10
(H) 11
(J) 12
(K) 13
- Which of the following is not less than 0.25?
(A)
(B)
(C)
(D)
(E)
- If the average of 5 consecutive odd numbers is 11, then the largest number is