Question Details

Direction (41–52): What will come in the place of (?) mark in following question?


? 3 × 6 + 512 3 = 170

Options

A

2

B

3

C

4

D

5

Show Answer

Correct Answer :

Option B

3

3

Solution :

The correct answer is 3.

Given equation:
? 3 × 6 + 512 3 = 170
Let the unknown value in the place of the question mark (?) be represented by x. Therefore, the equation becomes:
x 3 × 6 + 512 3 = 170

First, we find the cube root of 512:
512 3 = 8
(since 83=8×8×8=512)

Substituting this value back into the equation, we get:
x 3 × 6 + 8 = 170

Subtract 8 from both sides of the equation:
x 3 × 6 = 170 - 8
x 3 × 6 = 162

Divide both sides by 6:
x 3 = 162 6
x 3 = 27

Taking the cube root on both sides:
x = 27 3
x = 3
(since 33=3×3×3=27)

Thus, the value that will come in the place of the question mark (?) is 3.

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