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 |
Answer & Explanation
Answer: A) 7
Explanation: 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.
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