1. It is extracted from the ground.
2. It took years to form.
This should mean that the machine will have a chance of choosing every number likely
The would be even and I assume you have the answer
5≥|4-2x|
5≥4-2x≥-5
-1≤2x≤9
-0.5≤x≤4.5
x∈[-0.5;4.5]
Yes, as one half or 1/2 is also 10/20. 11/20 is greater than half by a 10% margin.