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Why Square-Numbered Lockers Stay Open

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A Square and a Cube · A Square and a Cube · 3:39

You'll learn: Why Square-Numbered Lockers Stay Open

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Why Square-Numbered Lockers Stay Open

3:39

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Why Square-Numbered Lockers Stay Open

You'll learn: Why Square-Numbered Lockers Stay Open

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Track Which Lockers Change State
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Find the Passcode from Lockers Touched Exactly Twice
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Why Squaring Counts a Square’s Area
You'll learn: Why Squaring Counts a Square’s Area
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You'll learn: Trailing Zeroes and Parity of Perfect Squares
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You'll learn: Odd L-Shaped Borders Build Every Square
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You'll learn: Test a Square by Subtracting Successive Odd Numbers
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Find the Next Square Without Multiplying Again
You'll learn: Find the Next Square Without Multiplying Again
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You'll learn: How Many Integers Lie Between Consecutive Squares?
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Count Squares in Blocks of One Hundred
You'll learn: Count Squares in Blocks of One Hundred
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Two Neighbouring Triangular Totals Make a Square
You'll learn: Two Neighbouring Triangular Totals Make a Square
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Square Roots: Side Length and Positive Root Notation
You'll learn: Square Roots: Side Length and Positive Root Notation
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You'll learn: Prime-Factor Pairs Reveal a Perfect Square
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You'll learn: Narrow Down the Root of a Large Perfect Square