There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

What always comes into a house through the keyhole?

Find the next number in the sequence

5 12 24 36 ?

A sundial has the fewest moving parts of any timepiece. Which has the most?

I am the fastest animal but cannot climb the tree. What am I?

What's a single-digit number with no value?

What four weights can be used to balance from 1 to 30 pounds?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?