What number when divided in half becomes zero?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

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?

How far can you walk into the woods?

When we see 2 but call 10?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What does Alexander the Great and Winnie the Pooh have in common?

Forwards I am heavy, backward I am not. What am I?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?