What is the fastest way to double your money?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

Remove two matchsticks to make the below equation correct.

John is found dead in his office at his desk. The police have narrowed the suspects down to three people: Mrs. Jacob, John’s wife Hena and his business partner Jason . All three visited John on the day of his murder, but all three provide the police with stories of explanation as to the reason for their visit.
Police found John with his wrist watch still on his right arm, a torn up picture of his wife laying on the floor beside the trash can, and an ink pen in his right hand. On the desk, the police found a name plate, a telephone that was off the hook, and a personal calendar turned to the July 5th page with 7B91011 written on it. After examining this evidence, the police knew their suspect. Who was it ?

Can you name four days which start with the letter 'T'?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

What do you see in the given picture?

Using Only Five 5's and any mathematical operator make sum as 37