Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

Can you count the number of matches in the picture below ?

Which digit occurred maximum times between the number 1 and 1000?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?