Which of these is a UK coin?
£2.
Eight coins, from a penny to two pounds. There's no 25p and no £3, and £5 is a note, not a coin. Those are the usual wrong answers.
Test Trap. £2 is the largest COIN; £5 is the smallest NOTE.
Why it matters: The test asks which values exist as coins and which as notes.
Memory hook: Coins stop at £2; notes start at £5.
Official handbook: Chapter 4, section 4.8, page 69