Factorial Notation - Quiz 1    Question

Question 1

Is the following statement True or False?

a)		True.		b)		False.

 

Not correct. Choice (a) is false.

No, by definition 0! = 1.

Your answer is correct.

By definition 0! = 1.

Question 2

Which of the following evaluates 7! correctly?

a)		7! = 28.		b)		7! = 42.
c)		7! = 5040.		d)		7! = 2520.

 

Not correct. Choice (a) is false.

Try again, you have calculated 7 + 6 + 5 + 4 + 3 + 2 + 1.

Not correct. Choice (b) is false.

Try again, you have only calculate 7 × 6, not 7! = 7 × 6 × 5 × 4 × 3 × 2 × 1.

Your answer is correct.

7! = 7 × 6 × 5 × 4 × 3 × 2 × 1 = 5040.

Not correct. Choice (d) is false.

Try again, you haven’t quite finished.

Question 3

Which of the following correctly evaluates ?

a)				b)
c)				d)

 

Not correct. Choice (a) is false.

Try again, recall that that is

Not correct. Choice (b) is false.

Try again, recall that that is

Not correct. Choice (c) is false.

Try again, you have ignored the factorial signs.

Your answer is correct.

Question 4

Which of the following is the correct evaluation of

a)				b)
c)				d)

 

Your answer is correct.

Not correct. Choice (b) is false.

Try again, you seem to have forgotten the 2!.

Not correct. Choice (c) is false.

Try again, you have calculated

Not correct. Choice (d) is false.

Try again, you have calculated

Question 5

Which of the following is the correct simplification of

a)				b)
c)				d)		None of the above.

 

Not correct. Choice (a) is false.

Try again, recall that that is

Your answer is correct.

Not correct. Choice (c) is false.

Try again, this could only be true if n = 0.

Not correct. Choice (d) is false.

Try again, there is a correct answer.