An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

What occurs twice in a week, once in a year but never in a day?

You bought me for dinner but never eat me. What am I?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

There are 3 apples in the basket and you take away 2. How many apples do you have now?