In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.

2	4	6
3	5	7
13	41	?

Logic: ​(Top number)² + (Middle number)² = Bottom number

Let's check:

Column 1: 2²=4, 3²=9

4 + 9 = 13 

Column 2: 4²=16, 5²=25

16+25=41

Column 3: 6²= 36, 7² = 49

36 + 49 = 85

So, the missing number is: 85

Thus, the correct option is: (d)