What does this rebus mean?

O
N
C
E
TIME

What can you deduce from the following BrainBat?

CRY
LMKI

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

I cannot talk, but I always reply when spoken to. What am I?

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?

What does the below image rebus riddle means ?

Bay of Bengal is in which state?

A man dies of old age on his 25 birthday. How is this possible?

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

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