MINDBENDER

1. A number is multiplied by itself five times, then divided by 3125 to return to the original number. What is the number in question? 2. What connects foot, tin and unknown? 3. Which famous gardener had to SWIVEL SICKLE AT VAT? 4. Which is the odd one out: gammon, mutton, ham, bacon? 5. Which three-letter word completes the following longer words: t---ge, re---d, lap---g, s---gs?