What is common among 11, 69, and 88?

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

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

In the picture given below, can you find out which digit will take place of the question mark?

Can you find the hidden animal in the picture below?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

What is more useful when it is broken?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?