Study the provided matrix carefully and determine which number from the given options should replace the question mark (?).
6 | 9 | 117
8 | 5 | 89
7 | 4 | ?
Show answer & explanation
Correct answer: D
Explanation
The pattern followed in each row is:
(First Number)2 + (Second Number)2 = Third Number
• Row 1: 62 + 92 = 36 + 81 = 117
• Row 2: 82 + 52 = 64 + 25 = 89
• Row 3: 72 + 42 = 49 + 16 = 65
Therefore, the number that replaces the question mark is 65.