We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

The dirtier I get, the whiter I look. Who am I?

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?

Find the 8 in the below-given Image.

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Find the Goldfish below the given Image.

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111