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?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

They are three errirs in this question. Can you find them?

Spot what is wrong here in below Picture?

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

which number am I?

Solve this riddle by finding the odd one out from the rest.