In a certain code, digits map to symbols as 1=*, 2=%, 3=#, 5=@, 7=&, 8=$. Rule: if the number both begins and ends with an even digit, the symbols for its first and last digits are swapped after coding. Using this rule, how is '28578' written?

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Accepted Answer

$$@&%. Coding 2,8,5,7,8 gives % $ @ & $. The number starts and ends with even digits (2 and 8), so the first and last symbols swap, yielding $ $ @ & %.

In a certain code, digits map to symbols as 1=*, 2=%, 3=#, 5=@, 7=&, 8=$. Rule: if the number both begins and ends with an even digit, the symbols for its first and last digits are swapped after coding. Using this rule, how is '28578' written?

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