9. What range of numbers are used in the octal number system? 0-8 1-9 0-9 0-7 Answer:D) 0-7 Explanation: From 0 to 7 numbers are used in the octal number system. Learn & Test Your Skills Python MCQsJava MCQsC++ MCQsC MCQsJavaScript MCQsCSS MCQsjQuery MCQsPHP MCQsASP.Net MCQs ...