Monday, January 9, 2012

Christmas lights

Put a positive number in each light. Each number in the top row is a single digit. Each number not the top row is the sum of the numbers in the two lights just above it. The 2 red lights contain the same number, as do the 2 yellow lights, and the 2 green lights.

Write your answer on comments with your full name.

4 comments:

  1. Estefanía Ríder ReyesJanuary 10, 2012 at 5:07 PM

    Estefanía Ríder Reyes. 3º ESO B.
    La solución es:
    2 1 3 9 2
    3 4 12 11
    7 16 23
    23 39
    62

    ReplyDelete
  2. Mª Carmen Herrera BeurnioJanuary 11, 2012 at 8:10 PM

    Mª Carmen Herrera Beurnio.3º ESO B
    la solución del problema es:
    2 1 3 9 2
    3 4 12 11
    7 16 23
    23 39
    62

    ReplyDelete
  3. Carmen Hens Barrilero 3º ESO B
    La solución que a mí me da es:
    2 3 5 19 2
    5 8 24 21
    13 32 45
    45 77
    122

    ReplyDelete
  4. Estefanía, Paula (in paper) and Mª Carmen got the right answer. The only problem witth Carmen Hens solution is that "Each number in the top row is a single digit", but you have 19 which has two digits, but very well done anyhow.

    ReplyDelete

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