2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

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

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

I am quite hot but become too cold if you remove the first two letters. What am I?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Who can jump higher than a Mountain?