I AM AN ODD NUMBER TAKE AWAY A LETTER AND I BECOME EVEN RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

What has 4 letters.

Sometimes has 9 letters.

Never has 5 letters. Did you answer this riddle correctly?
YES  NO  

Y Did you answer this riddle correctly?
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Post Office Did you answer this riddle correctly?
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121

Explanation
Tables consist of squares of the number from 4 to 12.
11^2 = 121. Did you answer this riddle correctly?
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The number missing on the left is 8 and the one on right is 7.

Explanation:
The pattern:
The number in the center of triangle is the square root of the sum of the numbers sitting outside on the corners.

Thus,
10 + 22 + 4 = 36
Square Root of 36 = 6

In the same manner:

10 + 42 + 12 = 64
Square Root of 64 = 8

12 + 22 + 15 = 49
Square Root of 49 = 7 Did you answer this riddle correctly?
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483 Did you answer this riddle correctly?
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The answer is 20. Many people have been guessing anywhere from 9 to 19, but the correct answer is 20. Did you answer this riddle correctly?
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Though "G" happens to be the seventh letter in alphabetic order, the answer is NOT "G",

The actual answer to this question is "H", which is the 7th letter within the words "the alphabet" Did you answer this riddle correctly?
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The word is STARTING! Did you answer this riddle correctly?
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The correct answer is T-H-A-T. Did you answer this riddle correctly?
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1. Did you answer this riddle correctly?
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59. Did you answer this riddle correctly?
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Noel (more literally no l). Did you answer this riddle correctly?
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Fiction Did you answer this riddle correctly?
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The letter 'x'. It is the 24th letter of the alphabet, XX in Roman numerals is 20, and XXX is a label for movies that are very inappropriate (unclean). Did you answer this riddle correctly?
YES  NO