If you add up all the numbers and its even its not prime
The remaining amount after 4 years is 1.25 kg
<h3>How to determine the remaining amount?</h3>
The half life of a function is represented as:

Where
Ao represents the initial amount
So, we have:

In 4 years, t = 4.
So, we have:

This gives

Evaluate the expression
A = 1.25
Hence, the remaining amount after 4 years is 1.25 kg
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Answer:
100%
Step-by-step explanation:
First, let's determine the probability for each of the conditions.
For P(greater than 2), we will have the cards 3, 4, 5, 6, 7, and 8.
For P(less than 3), we will have the cars 2.
In other words, every single card fits the conditions.
Thus, P(greater than 2 or less than 3)=7/7=100%
100%