Find the next number in the sequence

1, 2, 6, 21, 88, __?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Which part of London exists in France as well ?

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?

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

What does below rebus means ?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?