Question

9. How many strings can be formed by ordering the letters SCHOOL using some or all of the letters?

Answer 1

The number of strings that can be formed by ordering the letters SCHOOL using some or all of the letters is 1440 strings

What is Permutation in Mathematics ?

Permutation can be defined as number of ways in which things can arranged.

We were given to find how many strings that can be formed by ordering the letters SCHOOL using some or all of the letters.

First of all, How many distinct letters are in the word SCHOOL ?

The distinct letters are 5 in numbers.

What is the total number of letters in the word SCHOOL ?

The total number of letters is 6.

Then

6! + 5$P_{5}$

That is, 6 factorial + 6 permutation 5

( 6 x 5 x 4 x 3 x 2 x 1 ) + 6!/( 6 - 5)!

720 + 720

1440 strings

Therefore, the number of strings that can be formed by ordering the letters SCHOOL using some or all of the letters is 1440 strings

Learn more about Permutation here: https://brainly.com/question/4658834

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