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Question Number 1 5+8= A. 13 B. 5 C. 2 D. 12 Question Number 2 1022÷2 A. 2044 B. 1024 C. 1120 D. 511 Question Number 3 467×2 A. 465 B. 233.5 C. 5487 D. none of the above Question Number 4 22-11=11 A. true B. flase Question Number 5 give an infinite set A. 123...ect B. 1_10 C. 18_56 D. words in the alphabet