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There are about 3×10power 11 stars in our galaxy and about 100 billion galaxies in the observable universe. Suppose every galaxy has as many stars as ours. How many stars are in the observable universe?
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There are about 3×10power 11 stars in our galaxy and about 100 billion galaxies in the observable universe. Suppose every galaxy has as many stars as ours. How many stars are in the observable universe? Write in scientific notation.

User PokeLu
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(3 x 10 ^ 11) x (1 x 10 ^11) = 3 x 10^22
User Raymond Reddington
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