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Q.

[[1]] is the cube of the number 21.

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Detailed Solution

Concept- 9261 is the cube of the number 21.
The result of a number (x) being multiplied three times is referred to as the cube of that number. The number (x cube )'s is written as

x 3

and is spoken as "x-cubed," "x to the power of 3," or "x raised to 3." As an illustration, let's use the number 5. 5

×

5

×

5 is known to equal 125. 125 is hence known as the cube of five.
Find the cube of the given integer, which is the same number multiplied three times. Thus, the cube of 21 is 9261. Here the given number is 21.
We have to find its cube which can be also written as

213

i.e.

213 = 21 × 21 × 21

Then, after multiplying the numbers we get that the cube is 9261.
Hence, the cube of 21 is 9261.

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