Option 2 : 24

Given:

(x)2 × (8)2 ÷ (64)2 = 9

Calculations:

According to the question, we have

(x)2 × (8)2 ÷ (64)2 = 9

⇒ x2 × 64 ÷ 642 = 9

⇒ x2/64 = 9

⇒ x2 = 9 × 64

⇒ x2 = (3 × 3) × (8 × 8)

⇒ x = √(3 × 3) × (8 × 8)

⇒ x = 3 × 8

⇒ x = 24

∴ The value of x is 24.

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