Question 11
MediumOriginal questionFind the missing number: .
Show the answer and explanation
CorrectNot quiteAnswer C
Correct answer: C
Explanation
Right side: .
So .
Hence .
Worth noting
Reading the right side as gives 36; forgetting to subtract 14 gives ; stopping at 18 skips the last step.
- Concept
- Missing number when both sides need simplifying
- Typical timeTypical
- 60 s
- Your timeYours
- —
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