Answer:
your slow
Step-by-step explanation:
Answer:
a = 25
b = 100
c = 17
d = 68
Step-by-step explanation:
The answer is 5x-5that is the answer
Answer:
840
Step-by-step explanation:
Given


Required
Determine the number of rankings
The term "ranking" as used in this question implies permutation and the required is calculated using:

Where


So:






<em>Hence, number of ranking is 840</em>