Tag: math & puzzles

2,72,450,1568,?

25,64,144,324,576,?

If it were two hours later, it would be half as long until midnight as it would be if it were an hour later. What time is it now?

You have a balance and the following items of which you know the weights: a small coin weighing 5g, a pen weighing 10g, an eraser weighing 20g, a holepunch weighing 40g, and a stapler weighing 80g. How many different possible weights can you measure with these items?

A pool has four taps. The first tap takes two days to fill the pool, the second tap three days, the third four days and the last one only 6 hours. How long will it take to fill the pool using all 4 taps at once?

The founders of Hairytown decreed years ago that: 1. No two people can have the same number of hairs 2. No one can have 999 hairs. 3. No one can have more than, or the same number of hairs as, the population of the town The town has now reached its maximum population - what is it?