# NUMBER RIDDLES

### Fun Facts (Hints)

Math is a part of our lives in almost every way. Check out these interesting facts about math that show why it's the "universal language":
• The mathematical tool, the wheel, is believed to be first used around 3000 BC.
• 3000 BC is also the period in which the Ancient Egyptians started using numerals. As evidenced in their hieroglyphics.
• Fahrenheit invented his thermometer in 1718. Thermometers are mathematical tools used to measure temperature, and of course are still used widely present-day.
• The first evidence of counting dates back more than 52,000 years and is attributed to the Neanderthal man.
• Galileo one of the most famous mathematicians, was born in 1564.
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## 2 4 12 48 240 Riddle

Hint:
240. To get the number, multiply the previous number in the series by its position. 48 is in the 5th position, so 48 � 5 = 240
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Solved: 72%

## Five Hundred Riddle

Hint:
DAVID (Roman numerals)
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Solved: 39%

## Equals Eight Riddle

Hint:
Mirror one of the threes and put it and the other three together to get an eight.
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Solved: 63%

## Four And Five Riddle

Hint:
Nine!
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Solved: 45%

## Twenty In The Pool

Hint:
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Solved: 37%

## Match The Number Of Letters

This can be a little tricky if you misread the riddle. There's a little known fact in this once you've found the answer. Also being that the answers are limited, it's recommended to challenge yourself and begin the timer to solve this in under 30 seconds.
Hint: There are only 12 months
Nine
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## How Can It Be True Riddle

Hint:
Ancient Roman numerals. IX - "Cut" it in half and you get IV
XI- "Cut" it in half and you get VI
III- "Cut" it in half and you get also III
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## The Number Pattern Riddle

Hint:
31131211131221.

Each line, excluding the first, describes the one before it.

1
11 <---describes 1st line, read as "one 1"
21 <---describes 2nd line, read as "two 1's"
1211 <---describes 3rd line, read as "one 2 two 1's"
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Solved: 74%

## The Four Digit Number Riddle

Hint:
1694
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Solved: 75%

## Combination Value Riddle

Hint:
A = 1
B = 7
C = 4
D = 16
E = 14
F = 5
G = 9
H = 21
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Solved: 82%

## Counting In Binary Riddle

Hint:
It's as easy as 01 10 11.
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Solved: 54%

## Digits From 1 To 9 Riddle

Hint:
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Solved: 59%

## The Special Digits Riddle

Hint:
It is the numbers from one to nine in alphabetical order.

Eight, Five, Four, Nine, One, Seven, Six, Three and Two.
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Solved: 50%

## The Special Numbers Riddle

Hint:
It is the numbers from 1 to 9 in alphabetical order.

Eight
Five
Four
Nine
One
Seven
Six
Three
Two
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Solved: 53%