Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

When it is alive we sing, when it is dead we clap our hands. What is it?

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

what's the probability of getting a king or a queen from a pack of 52 cards?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

Can you solve the maths in the below-given picture equation?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?