单项选择题

Directions: In the following questions, choose the best answer from the five choices listed.
An operation, *, is defined as follows: for any positive numbers a and b.
Which of the following is an integer

A．11*5
B．4*9
C．4*16
D．7*4
E． 9*9
<上一题 目录 下一题>
热门 试题

单项选择题
Between which two consecutive two-year periods was there the greatest percent increase in the Democratic receipts
A．1981-82 to 1983-84
B．1985-86 to 1987-88
C．1989-90 to 1991-92
D．1991-92 to 1993-94
E． 1993-94 to 1995-96
单项选择题
Which of the following points lies in the interior of the circle whose radius is 10 and whose center is at the origin
(A) (-9, 4)
(B) (5,-9)
(C) (0,-10)
(D) (10,-1)
(E) (-6, 8)
相关试题