What is the fastest way to double your money?

I am an odd number. Take away a letter and I become even. What number am I?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Count the number of triangles in the picture below:

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

What makes this number unique: 8,549,176,320?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?