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

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

What does this mathematical rebus means ?

Can you replace the question mark with the correct number?

What is the riddle which can be asked all day with a different correct answer each time.

what's the probability of getting a king or a queen from a pack of 52 cards?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

A crime was committed at baker street. Ibrahim Dakota who was shot in the stomach was the main suspect. Sherlock questioned the suspect. The conversation started as:
Sherlock: What's your story, Ibrahim?
Ibrahim: I was walking around baker street and suddenly a man from the back shot me. I ran as fast as I could to save my life".
Sherlock: That is enough (and ask the police to arrest him).

Why does Sherlock think he is the murderer?

When is the top of a mountain similar to a savings account?

what does the below rebus mean?