How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

A man is found hanging dead from the ceiling of a room. The room’s dimensions are 15 x 15 x 15. The man is only 6ft tall and the rope was only 2ft long. There are no windows and only one door to the room. The door is bolted shut from the inside, and a puddle of water is under the man. How did he kill himself?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

Find the number of squares in the below picture

Which five letter word can be added at the end of below word to form a
valid word?

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The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

Why is 6 afraid of 7?