Challenge Your Brain

Hey there students! If you think your brain is taking too much rest than what it needs to, then put it to work. See if you can solve the following simple puzzles before your school day ends today.

1. Three positive integers; a, b and c are special because they give the same results whether added or multiplied together. Can you identify them?
2. A 10 feet long chain is nailed from end to end to a wall. The centre of the chain dips down 5 feet from where each end of the chain is nailed to the wall. How far apart are the two ends of the chain?

All the best!!!