Can you replace the question mark with the correct number in the below table sequence?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

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?

You can see it everyday, But cannot touch it at will. What is it?

How many sides does a circle have?

What runs around the whole yard without moving?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

Where do you go to learn how to make ice cream?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?