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Posted by Karl Sharman on September 22, 2011 – 9:24 am

What squares consist of three digits 1, 4, and 9? Let’s have the first 9 or so…

The first square in the sequence is 107^2 = 11449.

If you want – have a bash at squares consisting of the three digits 2,4 and 8.


This post is under “MathsChallenge” and has 5 respond so far.
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5 Responds so far- Add one»

  1. 1. Wizard of Oz Said:

    For 2, 4 and 8:
    168^2 = 28,224
    478^2 = 228,484

  2. 2. Kel9902 Said:

    For 1, 4, 9: 212^2=44944

  3. 3. Kel9902 Said:

    For 2, 4, 8: 2878^2 = 8282884

  4. 4. Karl Sharman Said:

    Sorry Kel9902 – can’t accept 212^2 = 44944 – I need all three digits in the answer, otherwise I would accept 7^2 – and that’s just too easy.
    Is anyone trying a logarithmic approach?

  5. 5. ragknot Said:

    Do you mean like this…
    107 Squared= 11449
    31488 Squared= 991494144
    70107 Squared= 4914991449
    387288 Squared= 149991994944

    How high? 9? This is only 4

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