Crack a very small code.
Each puzzle tells you the whole coding rule.
Ten questions, with the answers explained. Try them in your head, then open each answer when you're ready.
Play this quiz →QUESTION 1 / 10
Using A=1, B=2, and so on, what number represents D?
- 3
- 4
- 5
- 6
Show answer & explanation+
4
D is the fourth letter of the English alphabet.
QUESTION 2 / 10
Shift each letter one place forward, with Z wrapping to A. What does CAT become?
- CBU
- DBT
- ECV
- DBU
Show answer & explanation+
DBU
C becomes D, A becomes B, and T becomes U.
QUESTION 3 / 10
Shift each letter one place backward, with A wrapping to Z. What does DOG become?
- EPH
- CNG
- COF
- CNF
Show answer & explanation+
CNF
D becomes C, O becomes N, and G becomes F.
QUESTION 4 / 10
Write a word backward to encode it. How is LAMP encoded?
- MALP
- PLAM
- PMAL
- PALM
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PMAL
Reverse the letters of LAMP to get PMAL.
QUESTION 5 / 10
Using A=1 through Z=26, what is the sum of the letters in BAD?
- 7
- 8
- 6
- 9
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7
B is 2, A is 1, and D is 4. Their sum is 7.
QUESTION 6 / 10
Replace every vowel with an asterisk. How is ORANGE written?
- *RANG*
- *R*NG*
- OR*NG*
- *R*NGE
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*R*NG*
O, A, and E are replaced, while R, N, and G stay.
QUESTION 7 / 10
Swap each adjacent pair of letters. How does TEAM become encoded?
- META
- TAEM
- ETMA
- TEMA
Show answer & explanation+
ETMA
TE becomes ET and AM becomes MA.
QUESTION 8 / 10
Move a word's first letter to the end. What does STOP become?
- TOPS
- SPOT
- POST
- POTS
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TOPS
The opening S moves after TOP, producing TOPS.
QUESTION 9 / 10
Use the mirror alphabet A=Z, B=Y, C=X, and so on. What does ABC become?
- XYZ
- ZYX
- ZXY
- YZA
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ZYX
The first three letters pair with the last three in reverse order.
QUESTION 10 / 10
Double each letter without changing its order. What does MAP become?
- MAPMAP
- MMAAPP
- MMAPPP
- MAAPP
Show answer & explanation+
MMAAPP
M becomes MM, A becomes AA, and P becomes PP.