Cristina was born in 1888. She just had her 30th birthday today how did that happen?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

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

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??