Math Question:

The Babylonian number system is base 60, which makes it:

1. vigesimal
2. quinary
3. binary
4. sexagesimal

Answer: D

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A person with lung cancer is given an MRI. Four radiologists examine each MRI independently. If each specialist can detect lung cancer with 80% accuracy, what is the probability that at least one of them will detect cancer in this patient:	Which of the following is the surface area of a perfect sphere with a radius of 10 meters?