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Problem Of The Week 21

with 5 comments

if ||x-2|-1|<6 and ||y-1|-2|<9 where x and y are integers, then find the range of x-2y?
Tipster: When the equations look too complex, option hunting is a good method

Written by Implex

September 22, 2008 at 10:00 pm

5 Responses

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  1. From -26 to 26. -4<=x<=8 and -9<=y<=11

    Celebrating Life

    September 23, 2008 at 1:14 pm

  2. yeah right !


    September 23, 2008 at 4:41 pm

  3. implex bhai…
    I’m solving but getting answer as x from -5 to 9 and y from -10 to 12
    On checking with boundary values i know its incorrect.
    But m not getting the approach to open the second mod.
    Please explain.


    September 26, 2008 at 5:42 am

  4. i think you have got correct value ..
    its simple buddy


    September 26, 2008 at 6:18 am

  5. hey i got the range as -5<x<9 and -10<y<12
    so my range comes as -29 to 29. i think this is correct because the question states the expressions have values < 6 and < 9 and not <=6 or <=9. please inform me if i’m wrong. i’m new to ths blog. please help me if i’m wrong

    anudeep kansal

    September 30, 2008 at 6:15 am

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