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?

Find the hidden tiger in the given optical illusion ?

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

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

Replace the question mark with the number below given a simple math problem.

Out of four images which one is the odd one out?

What does the below rebus riddle means?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

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?