50 divide to find the answer
Answer:
its 2.62
Step-by-step explanation:
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>
1.no should b 8x + 20
2.no should be 21x + 14
3.yes
3.yes