Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

Solve below rebus puzzle?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

In the picture given below, can you find out which digit will take place of the question mark?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?

I have no life, but I can die. What am I?

Make a sentence consisting of three words that have the whole alphabet.