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This problem pertains to Cuisenaire Rods:

6-dark green


(a) If an all-brown train is equal in length to an all-orange train, what can be said about the number of brown rods compared to the number of orange rods?

(b) If a number can be represented by an all-red train, and an all-black train, it has at least eight factors. Name these factors.

(c) What is the smallest number of red rods for which an all-red train is equal in length to an all-blue train?

  • Math -

    wow, haven't seen Cuisenaire Rods since the early 60's

    Don't tell me they are still using these.

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