Question

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

Answer 1

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.