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Another Math Problem

  • 20-10-2010 11:35pm
    #1
    Paddycrumlinman
    Registered Users Posts: 241 ✭✭


    Brains of AH.... assistance is required.

    Brucy bonus point to the person who can explain the answer in simple terms.

    I had great success in the last one I posted.

    Thanks in Advance

    The letters A,B,C and D each stand for a different Single Digit. Use the clues below to find the digit. Use the clues to find the digits.

    Clues
    • C is greater than 1.
    • C is an odd number.
    • B and D are even Numbers.

    • CA + CB=DC

    What number does D Stand for?


«1

Comments

  • #2
    Scuid Mhór
    Registered Users, Registered Users 2 Posts: 2,326 ✭✭✭Scuid Mhór


    does that mean we can deduce a is also an odd number?


  • #3
    flyton5
    Registered Users Posts: 1,112 ✭✭✭flyton5


    Could you not google it? Or copy it from someone in school tomorrow?


  • #4
    Scuid Mhór
    Registered Users, Registered Users 2 Posts: 2,326 ✭✭✭Scuid Mhór


    flyton5 wrote: »
    Could you not google it? Or copy it from someone in school tomorrow?

    there is no fun in that, flyton5. to make the after hours crew, you gotta be able to conquer every challenge presented to you. i advise you start trying to solve it instead of sitting on your moral pedestal.


  • #5
    PanchoVilla
    Closed Accounts Posts: 1,053 ✭✭✭PanchoVilla


    Paddycrumlinman wrote: »
    Brains of AH.... assistance is required.

    Brucy bonus point to the person who can explain the answer in simple terms.

    I had great success in the last one I posted.

    Thanks in Advance

    The letters A,B,C and D each stand for a different Single Digit. Use the clues below to find the digit. Use the clues to find the digits.

    Clues
    • C is greater than 1.
    • C is an odd number.
    • B and D are even Numbers.

    • CA + CB=DC

    What number does D Stand for?

    D stands for do your own fúcking homework.


  • #6
    Paddycrumlinman
    Registered Users Posts: 241 ✭✭Paddycrumlinman


    strobe wrote: »
    D = 2

    But it might not be the only answer.

    Explanation if possible Sir?


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  • #7
    strobe
    Closed Accounts Posts: 7,872 ✭✭✭strobe


    Paddycrumlinman wrote: »
    Explanation if possible Sir?

    Blast my slow deletion skills. I was wrong.


  • #8
    irelandrover
    Registered Users, Registered Users 2 Posts: 3,796 ✭✭✭irelandrover


    A=2, B=4, C=3, D=6


  • #9
    Voodu Child
    Closed Accounts Posts: 6,706 ✭✭✭Voodu Child


    Eleventy seven


  • #10
    Scuid Mhór
    Registered Users, Registered Users 2 Posts: 2,326 ✭✭✭Scuid Mhór


    irelandrover wrote: »
    A=2, B=4, C=3, D=6

    i FOR ONE welcome our new after hours crew homie.


  • #11
    flyton5
    Registered Users Posts: 1,112 ✭✭✭flyton5


    Scuid Mhór wrote: »
    there is no fun in that, flyton5. to make the after hours crew, you gotta be able to conquer every challenge presented to you. i advise you start trying to solve it instead of sitting on your moral pedestal.


    I prefer to stand on my moral pedestal. I left a high horse around here somewhere too...


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  • #12
    cruizer101
    Registered Users, Registered Users 2 Posts: 3,205 ✭✭✭cruizer101


    C is greater than 1 and C is odd so that limits its to 3,5,7,9
    Considering the answer is a two digit number C has to be 3.

    Thirty something plus thirty something is sixty something so D is 6.

    A + B has to be less than 10 so is 2 & 4.


  • #13
    W.Shakes-Beer
    Closed Accounts Posts: 2,975 ✭✭✭W.Shakes-Beer


    irelandrover wrote: »
    A=2, B=4, C=3, D=6

    fine im gonna be immature and just laugh at that.





    C=3


  • #14
    mickdw
    Registered Users, Registered Users 2 Posts: 23,458 ✭✭✭✭mickdw


    Paddycrumlinman wrote: »

    • C is greater than 1.
    • C is an odd number.
    • B and D are even Numbers.

    • CA + CB=DC

    What number does D Stand for?

    D=6


  • #15
    enda1
    Registered Users, Registered Users 2 Posts: 5,166 ✭✭✭enda1


    irelandrover wrote: »
    A=2, B=4, C=3, D=6
    cruizer101 wrote: »
    C is greater than 1 and C is odd so that limits its to 3,5,7,9
    Considering the answer is a two digit number C has to be 3.

    Thirty something plus thirty something is sixty something so D is 6.

    A + B has to be less than 10 so is 2 & 4.
    Paddycrumlinman wrote: »
    Brains of AH.... assistance is required.

    Brucy bonus point to the person who can explain the answer in simple terms.

    I had great success in the last one I posted.

    Thanks in Advance

    The letters A,B,C and D each stand for a different Single Digit. Use the clues below to find the digit. Use the clues to find the digits.

    Clues
    • C is greater than 1.
    • C is an odd number.
    • B and D are even Numbers.

    • CA + CB=DC

    What number does D Stand for?

    Guys above are right. D=6, but A=1, B=2, C=3


  • #16
    c-note
    Registered Users, Registered Users 2 Posts: 434 ✭✭c-note


    CA+CB=DC:

    a = 1 b= 2 c=3 d=6

    OPTIONS
    a = 1,2,3,4,5,6,7,8,9
    b = 1,2,3,4,5,6,7,8,9
    c = 1,2,3,4,5,6,7,8,9
    d = 1,2,3,4,5,6,7,8,9

    TOLD C IS ODD > 1, B,D EVEN
    a = 1,2,3,4,5,6,7,8,9
    b = 2,4,6,8
    c = 3,5,7,9
    d = 2,4,6,8

    dc is an odd number (ends in odd number)
    cb is an even number (ends in even number)
    therfore ca must be odd-> a must be odd

    a = 1,3,5,7,9
    b = 2,4,6,8
    c = 3,5,7,9
    d = 2,4,6,8

    CA+CB=DC
    so D will be roughly twice C, only options are c=3 d=6

    a = 1,3,5,7,9
    b = 2,4,6,8
    c = 3
    d = 6

    now a+b = c (3)
    only options are 1,2

    a = 1
    b = 2
    c = 3
    d = 6


  • #17
    Paddycrumlinman
    Registered Users Posts: 241 ✭✭Paddycrumlinman


    c-note wrote: »
    CA+CB=DC:

    a = 1 b= 2 c=3 d=6

    OPTIONS
    a = 1,2,3,4,5,6,7,8,9
    b = 1,2,3,4,5,6,7,8,9
    c = 1,2,3,4,5,6,7,8,9
    d = 1,2,3,4,5,6,7,8,9

    TOLD C IS ODD > 1, B,D EVEN
    a = 1,2,3,4,5,6,7,8,9
    b = 2,4,6,8
    c = 3,5,7,9
    d = 2,4,6,8

    dc is an odd number (ends in odd number)
    cb is an even number (ends in even number)
    therfore ca must be odd-> a must be odd

    a = 1,3,5,7,9
    b = 2,4,6,8
    c = 3,5,7,9
    d = 2,4,6,8

    CA+CB=DC
    so D will be roughly twice C, only options are c=3 d=6

    a = 1,3,5,7,9
    b = 2,4,6,8
    c = 3
    d = 6

    now a+b = c (3)
    only options are 1,2

    a = 1
    b = 2
    c = 3
    d = 6


    Great explanation on this one. Thanks a million now I have to explain it to my 7 year old.... :eek:


  • #18
    FoxT
    Closed Accounts Posts: 4,204 ✭✭✭FoxT


    C >1
    C is odd
    C+C<10 since the answer is a 2-digit number.
    Therefore C=3

    D could be = C+C or C+C+1 if A+B >9

    BUT D is even, so it cannot be = C+C+1

    Therefore

    D=6


    A + B = C

    B is Even

    So A=1, B=2

    Verify:

    CA+CB=DC
    31+32=63

    Next!


    - FoxT


  • #19
    KINGVictor
    Registered Users, Registered Users 2 Posts: 1,184 ✭✭✭KINGVictor


    It is
    A-1
    b-2
    c-3
    d-6


  • #20
    irelandrover
    Registered Users, Registered Users 2 Posts: 3,796 ✭✭✭irelandrover


    i see i got the right answer in the wrong way, i took the CA to mean C multiplied by A


  • #21
    starbelgrade
    Closed Accounts Posts: 20,739 ✭✭✭✭starbelgrade


    D = D


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  • #22
    ascanbe
    Registered Users, Registered Users 2 Posts: 3,089 ✭✭✭ascanbe


    A to the B to the C to the D, Paddycrumlinman's heading for a Maths degree
    D to the C to the B to the A, the AH crew get solutions with a little delay


  • #23
    starbelgrade
    Closed Accounts Posts: 20,739 ✭✭✭✭starbelgrade


    ascanbe wrote: »
    A to the B to the C to the D, Paddycrumlinman's heading for a Maths degree
    D to the C to B to the A, the AH crew get solutions with a little delay

    Word.


  • #24
    ascanbe
    Registered Users, Registered Users 2 Posts: 3,089 ✭✭✭ascanbe


    starbelgrade wrote: »
    Word.

    True dat.


  • #25
    Saila
    Closed Accounts Posts: 7,751 ✭✭✭Saila


    Paddycrumlinman wrote: »
    Great explanation on this one. Thanks a million now I have to explain it to my 7 year old.... :eek:

    now you can explain why your '7 year old' is up at 00:30, waiting for you to do his homework hmmm...


  • #26
    Tiny Explosions
    Closed Accounts Posts: 258 ✭✭Tiny Explosions


    Paddycrumlinman wrote: »
    Great explanation on this one. Thanks a million now I have to explain it to my 7 year old.... :eek:


    This seems like a fairly difficult math problem for a 7 year old!

    I'd hate to see his/her's maths homework questions when their 10 years old.:eek:


  • #27
    DOC09UNAM
    Closed Accounts Posts: 8,305 ✭✭✭DOC09UNAM


    Saila wrote: »
    now you can explain why your '7 year old' is up at 00:30, waiting for you to do his homework hmmm...

    The time is not the same for everyone.


  • #28
    alwaysadub
    Registered Users, Registered Users 2 Posts: 11,554 ✭✭✭✭alwaysadub


    OP-Does your son think you figure these out by yourself, or does he know you ask a load of Irish people on the internet for help? :D

    Thank fcuk i didn't go to school in America, cos they are hard questions for a 7year old!


  • #29
    AnonoBoy
    Closed Accounts Posts: 22,559 ✭✭✭✭AnonoBoy


    "I beat the smart kids! I beat the smart kids!"


  • #30
    ascanbe
    Registered Users, Registered Users 2 Posts: 3,089 ✭✭✭ascanbe


    alwaysadub wrote: »
    OP-Does your son think you figure these out by yourself, or does he know you ask a load of Irish people on the internet for help? :D

    Thank fcuk i didn't go to school in America, cos they are hard questions for a 7year old!

    If you'd asked me that when i was 7, i'd still be trying to figure it out now.


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  • #31
    Sheeps
    Registered Users, Registered Users 2 Posts: 2,762 ✭✭✭Sheeps


    D = 7


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