Brilliant

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Algebra
Geometry
Number Theory
Calculus
Probability
Basic Mathematics
Logic
Classical Mechanics
Electricity and Magnetism
Computer Science
Quantitative Finance
Chemistry

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Excel in math and science.

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It's just easy

Level 1

What's can be the beginning ?

$x\quad ,\quad 5\quad ,\quad 25\quad ,\quad 125...$

Check out Part 2

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by Abda Ji-a

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