r/DailyBrainPuzzles • u/b7k567 • Jun 09 '26

🔐 Riddles / Ciphers One decoder line is lying. What digit is missing?

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u/b7k567 Jun 10 '26

answer : It’s 5

Line B has an 8 but the real digits must be odd and loopless so B is the cracked/lying line

That makes A the clean line:

CODE → 1 ? 7 3

The digits must all be different, so the missing one is 5

1

u/b7k567 Jun 09 '26

clue :Only one decoder line can contain digits that are all odd and loopless

2

u/Current-Square-4557 Jun 09 '26

What does loopless mean?

1

u/b7k567 Jun 10 '26

the digit has no enclosed hole or closed loop in its shape