I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What does this rebus means ?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Find out the missing number in the picture attached:

Give it food and it will live; give it water and it will die.

Check out the number list below and find what number comes next in the sequence.

111 , 113 , 117 , 119 , 123 , 137 , ?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

What does it mean?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?