Random math problums?

Question

1) If a!=362,880, what is the value of a?

2) What is the volume of a box 4cm high, 5x cm wide, and 24x cm long?

Answer 1

1) a = 9. I don't know of any way of solving this other than trial and error. There is no "inverse factorial" function. If someone knows a better way, give them best answer.

b) 4 cm x 5 cm x 24 cm = 480 cm³

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This isn't an answer to your question, but I found it hilarious.

http://www.halfbakery.com/idea/Inverse_20Factorial_20_27_3f_27

It seems logical that the inverse of the factorial function, '!', should be '?'.
Then you would have meaningful identities like:

9! = 362880

362880? = 9

9?! = 9

362880?!?!?? = 9

3! = 6 = 720?

1! = 1? = 1?!??!?!!?

It would really clear up mathematics, especially for the novice.


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AntiQuark, Oct 27 2004

Answer 2

a million. 3/4 of 40 4 Convert 3/4 to decimal. = 3/4 (Divide 3 with tips from 4) = 0.seventy 5 Multiply this with 40 4 to get the suitable answer. = 0.seventy 5 * 40 4 = 33 (answer) comparable is going for something of the numbers. 2. 2/5 of 20 answer: = 2/5 = 0.4 = 0.4 x 10 = 4 (answer) 3. 3/5 of 20 answer: = 3/5 = 0.6 = 0.6 x 20 = 12 (answer) wish this facilitates.

Answer 3

1) Like someone said, use trial and error. I'm too lazy to do it out.

2) 4 * 5 * 24 = 480 cubic cm

Answer 4

2)

v of rectunglar prism=length x width x height
=4cm x 5cm x 24cm
= 5cm x 96cm
= 480cm^3

hope this helped

Answer 5

1)9!=362880
2) V= l x w x h = 24x5x4=480cm^3

Answer 6

You also have random spelling problems.

Answer 7

a = 9;
0.4 * 0.5 * x * 0.24 * x =x^2*0.048 m^3

Answer 8

1) idk but 5! would be like 5x4x3x2x1 (120)

2)480 cm^3 (cube/cubic cm)