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2:28
YouTube
Khan Academy India - English
Triangular Numbers | Patterns | MH Grade 5 | Math | Khan Academy
Numbers can make shapes! Triangular numbers are like a bowling pin setup—they start with one at the top and get wider at the bottom. We’ll build these patterns with dots and see how the sequence grows. It’s like building a pyramid of oranges! Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now ...
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