Respuesta :

The answer is 1,260 non duplicated arrangements

Answer:

The correct option is:  1260

Step-by-step explanation:

S C H O O L S

Total number of letters = 7

Number of  S = 2 and number of  O = 2

So, total number of arrangements

[tex]=\frac{7!}{2!\times 2!}= \frac{7\times 6\times 5\times 4\times 3\times 2\times 1}{2\times 2} = \frac{5040}{4}=1260[/tex]