41. What number/s is/are included in the set of whole numbers but not included in the set of counting
numbers?
A. Negative numbers
C. fractions
B. o
D. radicals
42. What subset of real numbers is described by the intersection of whole numbers and integers?
A. Counting numbers
C. integers
B. Whole numbers
D. negative integers
43. The union of rational numbers and irrational numbers is the set of real numbers, how about thei
ntersection?
A. Also a set of real numbers
C. empty set
B. Set of rational numbers
D. set of irrational numbers
44. Which of the following is the set of whole numbers?
A. {1,2,3,4,5,...,9}
C. {1,2,3,4,...}
B. {0,1,2,3,...}
D. {0.5,1,1.5,2,2.5,...}
45. What is 0.000 000 000 217 in scientific notation?
A. 2.17 x 10-11 B. 2.17 x 1011
C. 21.7 x 10-11
D. 21.7 x 1011
46. 8.2 x 105 in decimal is
A. 820 000
B. 82 000
C. 0.000 082
D. 0.000 82​