How can you find a fake coin with a balance scale? How can you use math to pretend to read minds? Solve these puzzles and build your foundational logical reasoning skills.
Here are their statements, and exactly 3 of them are lies:
Who actually stole your wallet?
There is a total of 9 eggs, out of which 8 have identical weights and one has a different weight.
Using a balance, what is the minimum number of weighings required to guarantee that you'll be able to determine the egg with different weight?
Suppose you have 8 watermelons that are exactly the same in appearance. They are equal in weight except for one, which is heavier than the others. You want to find the heaviest one by using a two-pan balance. Each pan can hold any number of watermelons, and the only items that you can place in the pans are watermelons.
Find the best strategy to determine the heaviest watermelon. In the worst case scenario, how many times do you have to use the two-pan balance?
How many statements from the above list are false?