Can you place three balls such that the equation shown in the picture holds true?

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

3 6 12

4 8 16

5 10 ?

A car is crossing a 20 km-long bridge. The bridge can support at most 1500kg of weight over it. If somehow, the weight on the bridge becomes more than that, it will break.

Now, the weight of the car is exactly 1500kg. At the midway, a bird comes and sits on the roof of the car. This bird weighs exactly 200 grams.
Can you tell if the bridge breaks at this point or not?

A bomb exploded in a room full of married couples and no one died. How?

What is more useful when it is broken?

What number divided by 4 is the same as that number minus 4?

What goes up but never comes down?

What has a bottom at the top?

Spot 5 differences in two Christmas tree below:

If your uncle’s sister is not your aunt, what relation is she to you?