A MAN WANTED TO ENTER AN EXCLUSIVE CLUB BUT DID NOT KNOW THE PWORD THAT WAS REQUIRED HE WAITED BY THE DOOR AND LISTENED A RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

I am a door 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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Because it was his duty! Did you answer this riddle correctly?
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A keyhole Did you answer this riddle correctly?
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She was throwing away all the W's... Did you answer this riddle correctly?
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The third equation has a term with a pair of whistles. The last line involves a single whistle.

Furthermore, the man in the second and third lines are wearing a whistle, but the man in the last line is not wearing a whistle. Presumably the value of the whistle should be accounted for to get the correct answer.

The pictures can be translated into the following equations:

shoes + shoes + shoes = 30
shoes + (man + whistle) + (man + whistle) = 20
(man + whistle) + 2(whistles) + 2(whistles) = 13
shoes + (man) x (whistle) = ?

From the first equation we can solve for the shoes value:

shoes + shoes + shoes = 30
3(shoes) = 30
shoes = 10

We can then solve the second equation for the (man + whistle) value:

shoes + (man + whistle) + (man + whistle) = 20
10 + 2(man + whistle) = 20
2(man + whistle) = 10
man + whistle = 5

Then we solve the third equation for the whistle:

(man + whistle) + 2(whistles) + 2(whistles) = 13
5 + 4(whistles) = 13
4(whistles) = 8
whistle = 2

We also need to solve for the value of the man:

man + whistle = 5
man + 2 = 5
man = 3

Now we can evaluate the final expression, remembering the order of operations that multiplication should be evaluated before addition:

shoes + (man) x (whistle) = ?

10 + 3 x 2
= 10 + 3 x 2
= 10 + 6
= 16 Did you answer this riddle correctly?
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Keyhole Did you answer this riddle correctly?
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A door. Did you answer this riddle correctly?
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Peter Did you answer this riddle correctly?
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The man was guilty because he was watching the jury and not the door, because he knew she wouldnt be walking in. Did you answer this riddle correctly?
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A door! Did you answer this riddle correctly?
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The victim was in a convertible. He was shot when the top was down. Did you answer this riddle correctly?
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They built it at the North Pole. Did you answer this riddle correctly?
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He stabbed himself with an icicle. Did you answer this riddle correctly?
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Nothing. She divorced him for never being at home. Did you answer this riddle correctly?
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