I was highly delighted with myself for solving three puzzles today without looking at the answers. However, when I did look I was puzzled by the solution, even though I got it right.
Perhaps someone could explain. I might just be being thick!
Here it is
5 Chattanooga Charlie's bank account number is 289986788. He remembers this with the aid of a mnemonic.
Now I use mnemonics a lot with my students and immediately came up with the word 'Tennessee'. I just used the first letter of the name of each number.
Chris' solution says ' Take the lowest digit starting with the letters of Tennessee. Once you've used the lowest digit, use the next lowest, if there is one.'
But just using the word TENNESSEE would be ambiguous as you wouldn't know, when decoding, whether it was a 2 or 3, or a 6 or 7. Therefore the need for lowest digit etc. Ok?
T could be TWO or THREE so use the lowest digit which is 2. Similarly S can be SIX or SEVEN so use the lowest one first which is 6 then the next lowest which is 7.
I think I see it...........................but it still seems a lot of faffing about using lowest digit then next lowest digit.
I think my way is much more simple.
But just using the word TENNESSEE would be ambiguous as you wouldn't know, when decoding, whether it was a 2 or 3, or a 6 or 7. Therefore the need for lowest digit etc. Ok?
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