Answer:
;
and 
Step-by-step explanation:
Required
Select which expression equals 18

This gives:


This gives:


This gives:


This gives:


This gives:

From the above computations:
;
and
are equivalents of 18
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Right on top of 'a'. They'll look like one single point on the number line.
Answer:
less likely
Step-by-step explanation:
Probability is between 0 and 1 so 1 is guaranteed to happen and 0 is guaranteed to not happen