What does this Rebus Picture mean?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

You need to move three matchsticks to form three squares. Can you do it?

Can you count the number of triangles in the given figure?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

There was a strange boy who was born before his father. How can this be possible?