THE TEACHER WONT STOP YELLING SHE CLOSES THE DOOR AND WINDOW RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

Because they're shellfish! Did you answer this riddle correctly?
YES  NO  

The door. You have to let them in for breakfast! Did you answer this riddle correctly?
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The answer may surprise you: switch. Due to something called the Monty Hall Paradox, you will statistically have a better chance of making the "correct" choice. The concept is as follows:

Door 1 Door 2 Door 3

All have an equal chance to be correct:

Door 1: 1/3 Door 2: 1/3 Door 3: 1/3

After choosing Door 1, the remaining two have a 2/3 chance of containing the right choice:

Door1: 1/3 Doors 2 3: 2/3

If Door 3 is removed, the probability does not shift to 50:50. Instead, it is:

Door 1: 1/3 Door 2: 2/3

Thus, you should switch. Did you answer this riddle correctly?
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A keyhole Did you answer this riddle correctly?
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A window Did you answer this riddle correctly?
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Pi Did you answer this riddle correctly?
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Expla-nation Did you answer this riddle correctly?
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Keyhole Did you answer this riddle correctly?
YES  NO  

A door. Did you answer this riddle correctly?
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What's your point?! Did you answer this riddle correctly?
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Use a ruler! Did you answer this riddle correctly?
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He wanted a higher education! Did you answer this riddle correctly?
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Not enough, I have to go back tomorrow! Did you answer this riddle correctly?
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The ruler! Did you answer this riddle correctly?
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Bookworms! Did you answer this riddle correctly?
YES  NO