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drakecar drakecar
  • 26-08-2015
  • Mathematics
Answered

A science teacher needs to choose 4 students from a class of 20 to go to the library to do some research. How many different groups can be selected?


A.) 3,060


B.) 104,976


C.) None are correct


D.) 73,440

Verified Answer :

AL2006
AL2006 AL2006
  • 26-08-2015

The number is (20 x 19 x 18 x 17) / (4 x 3 x 2). That's 4,845 . None of the choices is correct.

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