Consider all 5 letter "words" made from the full english alphabet. (a) how many of these words are there total? (b) how many of these words contain no repeated letters? (c) how many of these words start with an a or end with a z or both (repeated letters are allowed)?

a) There are 11,881,376 of these words in total.

b) 7,893,600 of these words contain no repeated letters.

c) 896,376 of these words start with an a or end with a z or both.

Step-by-step explanation:

The English alphabet has 26 letters.

Our word has the following format

C1 - C2 - C3 - C4 - C5

C1 is the first character, C2 the second, etc...

(a) How many of these words are there total?

Each of C1, C2,... can be 26. So the total is

There are 11,881,376 of these words in total.

(b) How many of these words contain no repeated letters?

C1 can be any letter. C2 can be any letter bar the letter at C1. C3 any other than C2, C1... So

26-25-24-23-22

7,893,600 of these words contain no repeated letters.

(c) How many of these words start with an a or end with a z or both (repeated letters are allowed)?

Start with a, end with any letter other than z.

1-26-26-26-25

End with z, start with any other letter than A

25-26-26-26-1

Start with A, end with Z

1-26-26-26-1

896,376 of these words start with an a or end with a z or both.

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42

1/4 of a pint hope that mark as brainliest