Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

When 99 is considered higher than 100?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

What word is pronounced the same if you take away four of its five letters?

What can you hold in your right hand, but never in your left hand?

Replace the question mark with the correct number below.

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?