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Q.

Find the cube root of Question Image


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a

 54

b

 56

c

 57

d

 58 

answer is A.

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Detailed Solution

Concept: To answer this topic, we must first understand what a cube root is. The initial value of a cube root can be obtained by multiplying it by itself three times. The reverse of cubing or increasing a number to the third power is finding its cube root. Ex: If y is the cube root of x, then
Question ImageTo obtain the needed result, we must first multiply both 729 and 216 by their respective cube roots. In this instance, we must determine which two numbers will multiply by themselves three times to yield 729 and 216.
Cube root 729,
Thus, it is clear that we will arrive at 729 if we multiply 9 by itself three times. Consequently, 729's cube root is
Question ImageCube root of 216,
Question ImageHere, it is obvious that the result of multiplying 6 by itself three times is 216.
216's cube root is Hence, Question ImageMultiplying the cube root of 729 and 216
Question ImageHence, the correct option is 1.
 
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