Practice mode Coding and Decoding

In a code, the digits are written as symbols: 1 as &, 3 as +, 5 as @, 6 as !, 7 as =, 9 as ?. Which number is written as &!?=@?

Correct answer A. 16975

Explanation

Each symbol is converted back to its digit using the given list, keeping the order unchanged. So &!?=@ stands for 16975.

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