HOW WAS IT POSSIBLE THAT EVERY SINGLE PERSON IN AN AIRPLANE CRASH DIED BUT TWO PEOPLE SURVIVED RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

They are all married Did you answer this riddle correctly?
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A coffin Did you answer this riddle correctly?
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The poison was in the ice. When the girl drank the iced tea, the ice was still fully frozen. Gradually, as the ice cubes melted the poison was released into the drink. Did you answer this riddle correctly?
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A bell Did you answer this riddle correctly?
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A bike Did you answer this riddle correctly?
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Nothing, it doesn't have legs Did you answer this riddle correctly?
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No one does anything about it because the chemical is water. Did you answer this riddle correctly?
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Because the potatoes have eyes and the corn has ears! Did you answer this riddle correctly?
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I have my eye on you! Did you answer this riddle correctly?
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The plane was flying upside down! Did you answer this riddle correctly?
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By hareplane. Did you answer this riddle correctly?
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Place the apple on one person's head. Did you answer this riddle correctly?
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This problem can be best solved using the pigeonhole principle.

The argument will go like this:
Assume that all the non-bald people in NYC have different number of hairs on their head. The population is about 9 million and let us assume that there are 8 million among them who are not bald.

Now, those 8 million people need to have different number of hairs. On an average, people have just 100, 000 hairs on their head. If we keep on assuming that there is someone with just one hair, someone with two, someone with three and so on, there will be 7, 900, 00 other people left who will have more than 100, 000 hairs on their head and need different number of hairs.

Now, as per this assumption, if we keep increasing one hair for each person, to make everybody hair different in numbers, we will come across someone with 8, 000, 000 hairs. But that is practically impossible (even 1, 000, 000 is impossible). Thus there must be two people who are having same number of hairs. Did you answer this riddle correctly?
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A train has engin(ears) Did you answer this riddle correctly?
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17 mins.

The initial solution most people will think of is to use the fastest person as an usher to guide everyone across. How long would that take? 10 + 1 + 7 + 1 + 2 = 21 mins. Is that it? No. That would make this question too simple even as a warm up question.

Let's brainstorm a little further. To reduce the amount of time, we should find a way for 10 and 7 to go together. If they cross together, then we need one of them to come back to get the others. That would not be ideal. How do we get around that? Maybe we can have 1 waiting on the other side to bring the torch back. Ahaa, we are getting closer. The fastest way to get 1 across and be back is to use 2 to usher 1 across. So let's put all this together.

1 and 2 go cross
2 comes back
7 and 10 go across
1 comes back
1 and 2 go across (done)

Total time = 2 + 2 + 10 + 1 + 2 = 17 mins Did you answer this riddle correctly?
YES  NO