# Cube Steak

Originally published April 9, 2011

My grandmother has a pair of calendar cubes; each cube has six digits on it, one on each face.
Every morning, she re-arranges them to show the day of the month as a two-digit number (01 to 31).

Even though some numbers appear on both cubes, you can easily tell them apart because one cube is ivory and the other is brown.
I noticed that it was possible to use the ivory cube in the tens place and the brown cube in the ones place for SEVEN days in a row (within one month)!
Can you figure out what digits are on each cube?

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### 2 guesses to Cube Steak

• Kayla

The first cube has 0, 1, 2, 3, 4, 5
The second cube has 0, 1, 2, 6, 7, 8
the six can be turned upside down to make a nine

• Dude

Correct, Kayla!

The ivory cube has 012345; the brown cube has 012678.
The 6 on the brown cube is also a 9, just turn it upside-down!

There are two times each month where it is possible to keep the ivory cube in the tens place for seven days in a row:
06 07 08 09 10 11 12 and 16 17 18 19 20 21 22.

You are today’s winner.