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?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

Solve the rebus riddle in the picture below.

Find the hidden tiger in the given optical illusion ?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

My location can be determined by the below rebus.
So where am i ?

Replace the question mark with the correct number below.

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?