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March 24, 2017

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Mr. Digit wanted to assign a number to each student in his class. He could only use the digits 2,3,and 6 and each student's number had to have three digits. Can he find enough numbers for all 25 students if repeated digits are allowed? Will there be any extra numbers?

  • Math - ,

    There may be a shortcut to finding this answer -- but you can do it this way:

    222
    223
    226
    232
    233
    236
    262
    263
    266
    Do the same with numbers beginning with 3 and 6.

  • Math - ,

    Or you could just count how many numbers Ms. Sue provided and multiply by three for your total number of possiblities.

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