Consider the table given below in which the numbers bear certain relationship among themselves along the rows : 29 | 13 | 18 33 | X | 19 30 | 27 | 3 Which one of the following numbers is the missing number indicated above by X?

To find the missing number X, I will look for a rule that works for the rows where all numbers are visible (Row 1 and Row 3).\n\n1. **Check Row 1:** The numbers are 29, 13, and 18.\n Let's simply add them: $29 + 13 + 18 = 60$.\n\n2. **Check Row 3:** The numbers are 30, 27, and 3.\n Let's add them: $30 + 27 + 3 = 60$.\n\n3. **Establish the Rule:** Since both complete rows add up to exactly 60, the rule for this grid is 'Row Sum = 60'.\n\n4. **Solve for X (Row 2):** The numbers are 33, X, and 19.\n They must also add up to 60.\n $33 + X + 19 = 60$\n $52 + X = 60$\n $X = 60 - 52$\n $X = 8$.\n\n5. **Final Check:** The value 8 is Option (D). This is a simple, intuitive, and robust solution.