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Maths CBSE Live product
Class 8 (2026-27)
A square and a cube
Exploring Cube Numbers
10.
TBQ - Find the greatest
Question:
4
m.
Which of the following is the greatest?
(i)
\(70^3– 69^3\)
(ii)
\(46^3– 45^3\)
(iii)
\(70^2– 69^2\)
(iv)
\(46^2– 45^2\)
\(70^2 - 69^2\)
\(46^3 - 45^3\)
\(70^3 - 69^3\)
\(46^2 - 45^2\)
Explain your reasoning.
\((n + 1)^3 – n^3 =\)
\((n + 1)^2 – n^2 = \)
Answer variants:
\(1 + (n + 1) × 3n\)
\( 2n + 1\)
\( 3n + 1\)
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