Direction (41–52): What will come in the place of (?) mark in following question?
Correct Answer :
3
Solution :
The correct option is 3.
To find the value that comes in place of the question mark (?), we can write the equation as:
where represents the unknown value (?).
First, we evaluate the cube root of 512:
Since , we have:
Substitute this value back into the original equation:
Subtract 8 from both sides of the equation to isolate the term with :
Now, divide both sides of the equation by 6:
To find , take the cube root of both sides:
Since , we find:
Thus, the value that should come in place of the question mark is 3.
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