Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Find the missing number in the sequence below:

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Be active and find the killer in the picture Riddle below.

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

In order to complete the racing competition, the Mexico racetrack has to submit its top and the most famous three horses to win the competition. Due to an electrical storm, all the records are cleared and no one knows which horse holds the record. They all look identical and it becomes even more difficult to differentiate the horses. There are 25 horses in the Mexico racetrack. But there can be only five horses at a time on the track. What will the least number of races that can be conducted to find out the three fastest horses?

Why do you find that most of the buildings are deprived of the 13th floor?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?