Posted by fko on Thursday, December 10, 2009 at 4:38pm.
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  Ms. Sue, Thursday, December 10, 2009 at 4:44pm
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  Chrissy, Thursday, December 10, 2009 at 4:45pm
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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