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Posted by on Wednesday, June 6, 2012 at 6:41am.

What is the greatest 7 digit number without repeating any digit?

  • Math - , Wednesday, June 6, 2012 at 7:04am

    I am number greater than 70 000 but less than 90 000.My ones digit is the only even prime number.My tens digit id the same as my ones digit.My ten thousands digit is four times my ones digits.Both my hundreds and thousands digits are half the ten thousands digits.What number am i?

  • Math - , Wednesday, June 6, 2012 at 8:15am

    how about
    9876543 ?

  • Math - , Wednesday, June 6, 2012 at 12:11pm

    part b:
    xxxxx
    ones is even prime: 2
    xxxx2
    tens=ones = 2
    xxx22
    10K = 4*ones = 8
    8xx22
    100,1K = 8/2 = 4
    84422

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