Question

Study the pattern and identify the missing number:

7	13	6
4	22	18
17	?	7

• A. 23
• B. 25
• C. 21
• D. 24

Hint:

In each row the middle number is the sum of the first and last numbers.

Answer 1

The Correct Option is D

Step 1: Understanding the Question
The grid has three rows and three columns. Each row seems to follow the same rule. We must find the rule from the complete rows and use it on the row with the missing number.

Step 2: Study row 1
Row 1 is 7, 13, 6. Adding the first and last numbers gives 7 + 6 = 13, which is the middle number.

Step 3: Study row 2
Row 2 is 4, 22, 18. Again 4 + 18 = 22, which is the middle number. So the rule holds in both complete rows.

Step 4: Apply the rule to row 3
Row 3 is 17, ?, 7. The middle number is 17 + 7 = 24.

Step 5: Check the other options
23, 25 and 21 do not equal 17 + 7, so they break the rule that worked for both rows above.

Final Answer:
The missing number is 24, option 4. \[ \boxed{24} \]