Answer:

Step-by-step explanation:
Answer:
b^20/a^12
Step-by-step explanation:
b to the power of 20 over a to the power of 12
Answer:
the bottom one
Step-by-step explanation:
They are both the same ab and bc but im not entirely sure
Answer:
480 times
Step-by-step explanation:
Given
---- total number of rolls
See attachment for complete question
Required
Times OO will appear in a roll of 2000 times
From the attached bar graph,

So, the occurrence of OO in 2000 rolls is:



