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

Can you place three balls such that the equation shown in the picture holds true?

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

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

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?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?