Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

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?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

I am sure no one can have two things for dinner. what are they?

Five thieves looted a bank and they ran away in a car. The bank staff informed the police and they began the search of their car in their jeep. They found them on a road and chased them eventually catching them. The light that is used to fill the number plate was broken on the thieves' car. Also, the headlights of the jeep police were not working. How were the police able to catch the thieves then?

What do you see in the given picture?

What is the end of everything?