Question

in how many ways can 3 singers be selected from 5

Answer 1

5C3 =10 if you dont have any other specific conditions 

5P3 if you have other conditions. for example: ......singers be selected from 5 to be awarded the first 3 places in a competition

Answer 2

we have five singer and we need to select three singer .so the number of ways to take 3 singer is =5C3=5!/(5-3)!3!=5*4*3!/2!3!=20/2=10.(here 3! is cancelled with each other). There fore we can select 3 singer from five singer in 10 ways.... ####