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In the following question, a matrix of certain characters is given.These characters follow a certain trend, row-wise or column wise.Find out this trend and choose the missing character accordingly. 13 12 5 17 15 8 25 24 ? 29 21 20

Q: In the following question, a matrix of certain characters is given.These characters follow a certain trend, row-wise or column wise.Find out this trend and choose the missing character accordingly. 13 12 5 17 15 8 25 24 ? 29 21 20

Clearly, (3rd column)2 + (2nd column)2 = (1st column)2 In the first row, 52 + 122 = 132. In the second row, 82 + 152 = 172. Let the missing number in the third row be y. Then y2 + 242 = 252 or y2 + 576 = 625 or y2 = 49 or y = 7.

Correct Answer: 7

Explanation:

Clearly, (3rd column)² + (2nd column)² = (1st column)²In the first row, 5² + 12² = 13².
In the second row, 8² + 15² = 17².
Let the missing number in the third row be y.
Then y² + 24² = 25² or y² + 576 = 625 or y² = 49 or y = 7.

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