Which one will replace the question mark ?

Answer: 125

Explanation:

Each number in one sector corresponds to its cube in the opposite sector. Check the given pairs:

• 7 → 7 cubed = 343

• 1 → 1 cubed = 1

• 3 → 3 cubed = 27

• 5 → 5 cubed = 125

Therefore the missing number is 125.