In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

How can a man go eight days without sleep?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?