Tricky equation Riddle

If,
29 – 1 = 30
9 – 1 = 10
14 – 1 = 15

Based on above logic, can you prove that
11 – 1 = 10 ?

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SherlockHolmes Expert Asked on 27th June 2018 in Math Puzzles.
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  • 1 Answer(s)

    Use roman language. 

    XXIX – I = XXX
    IX – I = X
    XIV – I = XV
    XI – I = X

    Note – Just think of – means not subtract, – means just erase I from the base number.

    Ubaid_Shahid Curious Answered on 2nd August 2018.
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