A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

What is more useful when it is broken?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

What do you answer even though it never asks you questions?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

Can you solve below mathematical equation?

2^1234 - 2^1233

What number divided by 4 is the same as that number minus 4?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?