8 ways
B.
64 ways
C.
256 ways
D.
40,320 ways
Answer:
720 ways.
You would use 6P6 (Permutations) to find the answer.
You can also use the method that goes like this.
Book 1: 6 possible choices
Book 2: 5 possible choices (as you cannot replace the book once you have placed it.)
Book 3: 4 possible choices
Book 4: 3 possible choices
Book 5: 2 possible choices
Book 6: 1 possible choice (as it is the last book that you have not used.)
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p = s1 +s2+s3
x^2-3x+10 = -8x+5 +3x+3 +s3
combine like terms
x^2 -3x+10 = 5x+8 +s3
subtract (5x+8) from each side
x^2 -8x +2 =s3
The third sdie is x^2 -8x+2