2. a serial number for a tv begins with three letters, is followed by six numbers, and ends in one letter. how many different serial numbers are possible? assume the letters and numbers
can be repeated.

4.5698 * 10^11 different serial numbers

Step-by-step explanation:

For the first three letters, each letter has 26 different possibilities of being filled, and the letters can repeat, so the number of combinations for these three letters is:

26 * 26 * 26 = 17576

Then, we have six numbers, and each number has 10 possibilities that can be repeated, so the number of possibilities for these numbers are:

10 * 10 * 10 * 10 * 10 * 10 = 1000000 = 10^6

Now, for the last letter, we have 26 possibilities.

So, to find how many different serial numbers are possible, we just need to multiply the number of possibilities of each group:

17576 * 10^6 * 26 = 4.5698 * 10^11

the answer is 11.2 (i know i’m late)

step-by-step explanation: