Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

I have no life, but I can die. What am I?

Can you find the dog hidden in a group of pandas?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

I have branches, but no fruit, trunk or leaves. What am I?

What is next number in the pattern below:

131 517 192 123 ?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

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?