All the employees of ABC Company are assigned ID numbers. The ID number consists of the first letter of an employee's last name, followed by four numbers.
a.How many possible different ID numbers are there?
b.How many possible different ID numbers are there for employees whose last name starts with an A?

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The Answer of All the employees of ABC Company are assigned ID numbers. The ID number consists of the first letter of an employee's last name, followed by four numbers.
a.How many possible different ID numbers are there?
b.How many possible different ID numbers are there for employees whose last name starts with an A?

All the Employees of ABC Company Are Assigned ID Numbers