What does this rebus mean?

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A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

If six children and two dogs were under an umbrella, how come none of them got wet?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

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?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?