Select the missing number from the given options:

36	45	105
12	9	?
3	5	7

Correct option is C

Given:

Logic: $$\frac{\text{1st Row}}{\text{2nd Row}} = \text{3 Row}$$​

1st column,

$$\frac{36}{12} = 3$$

2nd column,

$$\frac{45}{9} = 5$$

Same logic follow in 2rd column,

​$$\frac{105}{?} = 7$$​​

$$? = \frac{105}{7}$$

? = 15

So, 15 is missing number.

Thus, the correct answer is (c).