Answer:

Zero Exponent Rule : loga 1 = 0.

Change of Base Rule : logb (x) = ln x / ln b or logb (x) = log10 x / log10 b.

Logb b = 1 Example : log22 = 1.

Logb bx = x Example : log22x = x.

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A solar calendar is a calendar whose dates indicate the season or almost equivalently the apparent position of the Sun relative to the stars. The Gregorian calendar, widely accepted as a standard in the world, is an example of a solar calendar

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