Here's what they mean The sun, moon ... is used to pinpoint the exact zodiac sign. This calculation considers the Earth’s axial precession, ensuring the sign aligns with the Sun’s apparent ...
Image caption, To find the mean age, use a calculator to divide the total age of all the children (168) by how many children there are (15). 168 ÷ 15 = 11.2. The mean age is 11.2 years old.
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