Question

A bank requires that its customers create a PIN to access their account. The PIN must be 1 letter followed by 3 numbers. How many unique PINs are there?

Answer 1

26,000

Explanation:

There are 4 places to be filled.

_ _ _ _

Now we put in each place the number of possible characters that can go there.

26 10 10 10

Finally we multiply all the numbers together.

26 * 10 * 10 * 10 = 26,000

Answer: 26,000