NCO- Cyber Olympiad Class 6: Questions 30 - 32 of 722
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Question number: 30
Question number: 31
Harsh is learning mathematics, he has X number then he multiply the number by 7 and subtract 9 from the answer. Starting with X, how can he get his original number back?
|a.||Divide X by 7 and then add 9 to the result|
Add 9 to X and then divide the resulting number by 7
Subtract 9 from answer and then multiply the result by 7
Multiply X by 9 and then subtract 7 from the result