What is the next number in this series?

4,12,84,3612....

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?

A landlord calls both of his sons and tells them that their horses will now decide who will transfer the inheritance. He tells them to race along the land till the end and the one whose horse will be slower will win and be the heir to all the property.

Both of them keep wandering for days but to no result. Then they ask a wise man regarding it. The man advises them on the matter after which they jump on the horses and race as fast as they can till the end. Why did they do it?

What did the wise man say?

Below rebus represent famous DiCaprio movie. Can you name it?

Trying to tease Birbal, Akbar gave him one gold coin and ask him to buy
* something for him to eat
* something for him to drink.
* something to feed the cows
* something to plant in the garden
and most important you need to buy only one thing.

What must Birbal buy to silence Akbar?

What can go up a chimney down, but can’t go down a chimney up?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

In the four images below, can you find the odd one out?

When we see 2 but call 10?