Which is heavier: a ton of bricks or a ton of feathers?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Can you make four (4) nines (9) equal 100?

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?

Whats the next number in the below number sequence pattern.

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

How many triangles are there on the puzzle below?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?