Codes and puzzles quiz

Secret codes, letter values, word pairs, odd one out and palindromes. Written for every age — if you choose another level, the nearest questions are used.

The kind of thing you'll be asked

Examples only — your own questions are built fresh, with different names and numbers every time.

Find the odd one out.
- Mars
- the Moon
- Mercury
- Venus
Answer: the Moon — The others are planets; the Moon goes round the Earth.
Which of these words is spelt the same backwards?
- civil
- reform
- racecar
- radio
Answer: racecar — "racecar" backwards is "racecar" — the same word. A word like that is called a palindrome.
If MILK becomes OKNM, what does GOAT become in the same code?
- IQCV
- JRDW
- HPBU
- VCQI
Answer: IQCV — Each letter moves 2 places forward in the alphabet (M→O, I→K, L→N, K→M). So GOAT becomes IQCV.