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Posted by on Wednesday, October 6, 2010 at 7:04pm.

my number is a multiple of 5, but doesnt end in 5, the prime factorization of my number is a string three numbers, two of the numbers in the prime factorization are the same, my number is bigger than the seventh square number

  • math - , Wednesday, October 6, 2010 at 7:08pm

    It's bigger than 49, and it must be a multiple of 10 (since it doesn't end in a 5)..so your choices are 50, 60, 70, 80, 90, etc..Now check your other conditions and find your number.

  • math - , Wednesday, October 6, 2010 at 7:09pm

    could it be 20? it does not end in 5, the factor string is 2 * 2 * 5, I'm not sure about the last part though - the number being bigger than the seventh square number... just a thought - double check with someone else though.

  • math - , Wednesday, October 6, 2010 at 7:09pm

    the 7th square number is 49, so it has to bigger than 49
    must end in 0

    factors: two the same, third diffferent

    50 = 5x5x2

    mmmhhh?

  • math - , Wednesday, October 6, 2010 at 7:10pm

    The 7th square number is 49, so it has to be bigger than that.

  • math - , Tuesday, February 15, 2011 at 2:19am

    50!!

  • math - , Thursday, September 27, 2012 at 3:49pm

    what is the answer????

  • math - , Wednesday, November 4, 2015 at 4:01pm

    50

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