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Find number abc

If c3ba3 - 2cccc = a3bab find number abc. Multiple solutions may exist.

Correct answers: 0

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Philosophy Exam

A college student in a philosophy class was taking his first examination.
On the paper there was a single line which simply said: "Is this a question?" - Discuss.
After a short time he wrote: "If that is a question, then this is an answer."
The student received an "A" on the exam.
(True story)

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Sunspots

In 1611, Johannes Fabricius, a Dutch astronomer, observed the rising sun through his telescope, and observed several dark spots on it. This was perhaps the first ever observation of sunspots. He called his father to investigate this new phenomenon with him. The brightness of the Sun's center was very painful, and the two quickly switched to a projection method by means of a camera obscura. Johannes was the first to publish information on such observations. He did so in his Narratio de maculis in sole observatis et apparente earum cum sole conversione. ("Narration on Spots Observed on the Sun and their Apparent Rotation with the Sun"), the dedication of which was dated 13 Jun 1611.

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