Answer:
1. P(n,r) = P(5,3)
= 5!/(5−3)!
= 60
2. P(n,r) = P(6,4)
= 6!/(6−4)!
= 360
3. P(n,r) = P(7,7)
= 7!/(7−7)!
= 5,040
4. P(n,r) = P(10,7)
= 10!/(10−7)!
= 604,800
5. P(n,r) = P(4,1)
= 4!/(4−1)!
= 4
6. P(n,r) = P(15,3)
= 15!/(15−3)!
= 2,730
7. P(n,r) = P(14,3)
= 14!/(14−3)!
= 2,184
8. P(n,r) = P(70,2)
= 70!/(70−2)!
= 4,830
9. P(n,r) = P(20,6)
= 20!/(20−6)!
= 2.79072E+7
= 27,907,200
10. P(n,r) = P(16,4)
= 16!/(16−4)!
= 43,680
If you have any questions, feel free to send a message.
