Puzzle 76: Addition: letters for digits (one letter wrong)
5 April 2017
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From New Scientist #1127, 2nd November 1978 [link]
Below is an addition sum with letters substituted for digits. The same letter should stand for the same digit wherever it appears, and different letters should stand for different digits. Unfortunately, however, there has been a mistake and in the third line across one of the letters is incorrect. The sum looks like this:
Which letter was wrong? What should it be? Write out the correct addition sum.