What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

When can we add 2 to 11 and get 1 as the correct answer?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

Can you write down eight eights so that they add up to one thousand?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Solve below rebus puzzle?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?