Think laterally and you will get three answers to a simple question.

The question is:

What do you get if you minus Ten from Forty Nine?

The answers are




How? Please explain. No partial answers.

  • 2
    $\begingroup$ What is this, a lateral-thinking puzzle with "silly maths", and it's actually quite decent? What's next, a mystery puzzle with a satisfying solution? $\endgroup$
    – Bass
    Aug 26, 2020 at 16:59
  • 1
    $\begingroup$ Hmmm. Here is a mystery puzzle @Bass. Inspector Jacques Clouseau is called upon urgently to investigate a homicide at a Convention in Paris.The Speaker was murdered and all doors to the speech room were closed. Who did it? Hint: It was a Butler's convention :) $\endgroup$
    – DrD
    Aug 26, 2020 at 18:52

1 Answer 1


You can get any of the answers using

Roman numerals: XLIX = 49, remove the first X, leaves LIX = 59. Or remove the last, to get XLI = 41. Or correctly do the subtraction, to get XXXIX = 39.


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