Question: please do this on paper if you can 1.Using the letters from the word SCARED with no repetition, how many different letter combinations exist if

please do this on paper if you can

1.Using the letters from the wordSCARED with no repetition, how many differentletter combinations exist if you can choose any number of letters?

2.Determine the value oft_{12, 5}of Pascal's triangle.

3.What is the sum of the terms in the 9th row of Pascal's triangle?

4.A toy store is going to display5 identical dolls, 7 identical trucks,and3 identical toy pianos in their front window. How many different ways can the store arrange the toys in a line?

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1. Background knowledge of the subject and

4. What specific changes in the environment have taken place in relation to the information we have collected?

2. The purpose of the acquisition of the information.