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# What are some examples of math trivia?

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Some math trivia examples include these facts: The middle digit of a three-digit answer to the multiplication of any number by 11 is the sum of the other two digits, or 21 x 11 = 231, while 2 + 1 = 3. The sum of the digits of the result of multiplying a number by 9 is always 9; 2 x 9 = 18, while 1 + 8 = 9.

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Another fun trivia fact is that the number 142,847 is cyclic, meaning that its digits switch positions in a cycle when the figure is multiplied by any number from 1 to 6. For example, 142,857 × 1 = 142,857, while 142,857 × 5 = 714,285, 142,857 × 4 = 571,428 and 142,857 × 6 = 857,142. When multiplying 1089 by 9, the answer is its exact reverse: 9801.

Most mathematical symbols were invented in the 16th century, before which math problems were expressed in words. The Fibonacci sequence is manifest in nature. An example of the Fibonacci sequence includes the pattern of leaves around the stems of some plants.

Another trivia fact is that the name Google originated with the misspelling of the term "googol," which is the number 1 followed by 100 zeros. Lastly, a ratio of 1.618 is called the golden ratio.

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Who was the real Mother Goose?

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The number "14" is the atomic number for the element silicon, atomic weight or mass of nitrogen and the number of days in a fortnight. Valentine's Day occurs on Feb. 14. Fourteenth is the common designation for the actual 13th floor of some taller buildings due to superstitions around the number 13.

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The number 55 is the largest Fibonacci number to be both triangular and semi-prime. Also, any odd number between 90 and 110 multiplied by 55 would result in a palindrome numeral. The number 55 is also the atomic number for caesium.

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The number 16 is an even number and is the only integer that has the form xy=yx, where x and y are different numbers (2 and 4). Another fact is that the base 16, or hexadecimal system, is a notational system for expressing real numbers used in computer science. The 16 digits it uses to represent numbers are the numbers 0-9 and the letters A-F.