Class VIII Mathematics
Chapter 6: Cubes and Cube Roots
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Syllabus Sections
Key Formulas & Equations
Click Copy to duplicateHardy Ramanujan Identity
1729 = 1^3 + 12^3 = 9^3 + 10^3
Smallest taxicab number expressible as sum of two cubes in two different ways.
Related Formulas from Adjacent Chapters
Square Sum Identity
\sum_{i=1}^{n} (2i-1) = n^2
[From Squares and Square Roots] Sum of first n consecutive odd numbers is n-squared.
Compound Interest Amount
A = P\left(1 + \frac{R}{100}\right)^n
[From Comparing Quantities] Future accumulated value under annual compounding interest.