Remove two matchsticks to make the below equation correct.

What is more useful when it is broken?

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?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

What is the word or phrase?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?