Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

How many times do a clock's hands overlap in a day ?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

When 99 is considered higher than 100?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Give it food and it will live; give it water and it will die.

I am working in a bus company. The company recently went under expansion and therefore there was not enough room for all the buses. As a result, twelve buses had to be stored outside.

If the company decides to expand the garage space by forty percent, enough space to accommodate the current buses will be created leaving enough space for twelve more buses if the need arises in future.

Can you calculate the number of buses that the company owns at present?

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?

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