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This content is taken from the Davidson Institute of Science Education at the Weizmann Institute of Science's online course, Maths Puzzles: Cryptarithms, Symbologies and Secret Codes. Join the course to learn more.
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## Davidson Institute of Science Education at the Weizmann Institute of Science

Skip to 0 minutes and 0 seconds So, our first puzzle from the aliens is I times KINGJO equals JOKING Since my name in English is Joseph, Yossi in Hebrew, King Jo must be me, and I King Jo am joking! Can we solve this cryptarithm? It’s pretty difficult. This is probably the hardest challenge for you. I times KINGJO equals JOKING So we’ve given you a hint here - that I equals to 4. Can you solve it?

# Solve the alphametic part of the course challenge

OK! Let’s get down to the course challenge. Try and solve the following cryptarithm: I x KINGJO = JOKING The hint is: I=4

In the video we mixed Capital and regular letters, just to make it more “readable”, however, Capital and regular letters encode the same number, i.e. I=i=4.

This isn’t an easy one, so spend some time on it. You can ask for hints in the discussion, but don’t give away the answer. That you’ll be able to see on the next step. Good Luck!