You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

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

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

If eleven plus two equals one, what does nine plus five equal?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

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

What is the word or phrase?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?