Saturday

December 20, 2014

December 20, 2014

Posted by **manny** on Tuesday, September 4, 2007 at 2:31pm.

(a) Codes

(b) Codes with distinct letters

(c) Codes with the same letters

- math -
**mathstudent**, Tuesday, September 4, 2007 at 4:51pmAssuming there are 26 letters (no distinction among case) and 10 digits:

A) 26 * 26 * 10 = 6760

B) 26 * 25 * 10 = 6500

C) 26 * 1 * 10 = 260

- math -
**Anonymous**, Sunday, September 9, 2007 at 2:48ama) Codes

The way of labeling a code with two letters followed by a digit

Assigning one of the 26 letters: A, B, C, D…., F

Assigning one of the 10 digits: 0, 1, 2…, 9

There are two letters so 26

By product rule there are 26×26×10 = 6760 codes

b) Codes with distinct letters

The way the distinct letters are label

25 character of first letters and 25 characters for the second letter so

There are 26×25×10=6500 codes

c) Codes with same letters

The way the same letters are label

26×1×10=260 codes

**Answer this Question**

**Related Questions**

math - Suppose a code consist of two letters followed by a digit. Find the ...

probability - you are to set up a code of consisting of three letters (A to Z) ...

math please hurry - A secret code must consist of three capital letters followed...

gemetry - An identification code is to consist of two letters followed by six ...

Math - An identification code is to consist of six letters followed by three ...

Math110 - how many 6 - slots codes can be made up using 2 letters followed by 2 ...

math30 - A security code used to consist of two odd digits, followed by four ...

Math - 1.) A security code has seven characters. Each code begins with two ...

math - please i need help with this...were studying probability...possible ...

Math - The registration code for a new softwear game you purchased consists of a...