You need to arrange three 7 and mathematical symbols to form number 1?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

How many triangles are there on the puzzle below?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Solve the puzzle by telling what does below picture means.

What number comes next in this sequence:
7 8 5 5 3 4 4 _

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.

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

what does this picture(rebus) riddle means ?

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?