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logic puzzle
Jun. 21st, 2010 02:02 pmOn Friday, for a school science lesson on acids, I printed sets of five labels, one of each of the following names on a single 38 x 98mm printer label, and cut them apart afterwards. They were all the same width, the same font and point size was used throughout.
Soap
Vinegar
Water
Baking Soda
Lemon
I prepared 8 labelled beakers of each of those solutions, all the same size beaker.
After the lesson I threw away the solutions and loaded a dish washer with the 40 labelled beakers, all of which had contained one of the chemicals - and yes, there were still 8 of each.
The beakers were put into the machine randomly, because I was in a rush I didn't remove the labels first - they usually wash off and can be removed from the filter in the machine fairly easily.
This morning 33 out of 40 beakers were missing the labels. 6 out of the 7 that still held labels had held baking soda.
There is a simple explanation as to why this happened. Can you guess it before looking behind the cut?
( LOGICAL, CAPTAIN... )
Soap
Vinegar
Water
Baking Soda
Lemon
I prepared 8 labelled beakers of each of those solutions, all the same size beaker.
After the lesson I threw away the solutions and loaded a dish washer with the 40 labelled beakers, all of which had contained one of the chemicals - and yes, there were still 8 of each.
The beakers were put into the machine randomly, because I was in a rush I didn't remove the labels first - they usually wash off and can be removed from the filter in the machine fairly easily.
This morning 33 out of 40 beakers were missing the labels. 6 out of the 7 that still held labels had held baking soda.
There is a simple explanation as to why this happened. Can you guess it before looking behind the cut?
( LOGICAL, CAPTAIN... )
