Hi. I am new and I need immediate assistance with my homework please

Question

Question 1: Eight different coffee mugs have to be arranged in a showcase. How many different arrangements are possible?

A.) 50,000

B.) 40,320

C.) 30,760

D.) 40,000

 

Question 2: Tina has 20 rings. In how many ways can she select a set of 3 rings?

A.) 1000

B.) 850

C.) 950

D.) 1140

Answer 1

permutation of 8 items taken 8 at a time is 8!

combinations of 20 items taken 3 at a time = 20!/(17!3!)