Answer:
Here is the answer, with solution. Please see attached photo.
1. 4P2 or P(4,2)
= n!/(n-r)!
= 4!/(4-2)!
= 4•3•2•1/2!
= 24/2
= 12
2. 6P2 or P(6,2)
= 6!/(6-2)!
= 720/4!
= 720/24
= 30
3. 6P6 or P(6,6)
= 6!/(6-6)!
= 720
4. -4+7P4 or P(7,4)
= -4 + 7!/(7-4)!
= -4 + 5040/3!
= -4 + 5040/6
= -4 + 840
= 836
5. 5•6P5 or 5•P(6,5)
= -5 • 6!/(6-5)!
= -5 • 720/1!
= -5 • 720
= 3600
