Find the next number in the series.
1 10 24 43 67 ?

Our product and our sum always give the same answer. Who are we?

What have one eye but still cannot see?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

What does Alexander the Great and Winnie the Pooh have in common?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?