melodysprecherpelctt
melodysprecherpelctt melodysprecherpelctt
  • 07-12-2018
  • Mathematics
contestada

Evaluate the expression.
7! • 4! - 6!

A) 120,240
B) 120,020
C) 120,000
D) 119,420

Respuesta :

musiclover10045
musiclover10045 musiclover10045
  • 07-12-2018

When a number is followed by an exclamation point (!) it means that number gets multiplied by all the numbers below it.


So 7! = 7*6*5*4*3*2*1 = 5040

4! = 4*3*2*1 = 24

6! = 6*5*4*3*2*1 = 720


Now the equation is:

5040 * 24 -720

5040 *24 = 120960

120960 - 720 = 120240


The answer is A.

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