What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

What does this Rebus Picture means ?

There is a place where if I stand up straight, I will still be considered sideways.

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What breaks yet never falls, and what falls yet never breaks?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

what does the below math rebus puzzle mean?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?