Answer:
1.95040
2.720
Step-by-step explanation:
1. (12-5)=7
12*11*10*9*8*7*6*5*4*3*2=479001600
7*6*5*4*3*2=5040
479001600/5040=95040
2. (10-3)=7
10*9*8*7*6*5*4*3*2=3628800
3628800/5040=720