What four weights can be used to balance from 1 to 30 pounds?

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?

What number should come in place of the question mark below?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

The Little ant seems to be always confused. Do you know why?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Can you solve the maths in the below-given picture equation?

What is black when you buy it, red when you use it, and gray when you throw it away?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?