**Random Facts About Numbers**

- The name of the popular search engine ‘Google’ came from a misspelling of the word ‘googol’, which is a very large number (the number one followed by one hundred zeros to be exact).
- A ‘googolplex’ is the number 1 followed by a googol zeros, a number so ridiculously big that it can’t be written because there literally isn’t enough room in the entire universe to fit it in!
- 111111111 x 111111111 = 12345678987654321
- 12 + 3 – 4 + 5 + 67 + 8 + 9 = 100
- 2013 is the first year since 1432 that is a rearrangement of four consecutive numbers.
- 2013 is also the 250th anniversary of 1763, which was the year London adopted house numbers.
- The Duke of Wellington’s London home at Aspley House had the address Number One, London, as it was the first house one came across after tollgates at the top of Knightsbridge.
- Forty is the only number which when spelled out in English has its letters in alphabetical order.
- The highest number that can be spelled out without using any letter more than once is five thousand.
- The word ‘hundred’ derives from ‘hundra’ in Old Norse, which originally meant 120.
- 1 x 8 + 1 = 9

12 x 8 + 2 = 98

123 x 8 + 3 = 987

1234 x 8 + 4 = 9876

12345 x 8 + 5 = 98765

123456 x 8 + 6 = 987654

1234567 x 8 + 7 = 9876543

12345678 x 8 + 8 = 98765432

123456789 x 8 + 9 = 987654321

- The number 142857 is special. When you multiply it the digits found in the answer stay the same, just in a different order. Check it out:

1 x 142857 = 142857

2 x 142857 = 285714

3 x 142857 = 428571

4 x 142857 = 571428

5 x 142857 = 714285

6 x 142857 = 857142

But when you multiply it by 7, you get another rather special number:

7 x 142857 = 999999

And it doesn’t stop there:

142 + 857 = 999

14 + 28 + 57 = 99

142857 x 142857 = 20408122449

20408 + 122449 = 142857

- In a room of just 23 people there’s a 50% chance that two people have the same birthday. It’s called the Birthday Problem. In a room of 75 there’s a 99% chance of two people matching.
- (6 × 9) + (6 + 9) = 69.
- 10! seconds is exactly 6 weeks. – 10! means 10 factorial. 10! = 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 3628800 seconds. Which is 42 days, or 6 weeks, exactly.
- 555 is used by some in Thailand as slang for “hahaha”, because the word for “five” is pronounced “ha”.
- It is believed that Shakespeare was 46 around the time that the King James Version of the Bible was written. In Psalms 46, the 46th word from the first word is shake and the 46th word from the last word is spear.
- India invented the Number System. Zero was invented by Aryabhatta. The place value system, the decimal system was developed in India in 100 BC.
- The largest numbers the Greeks and the Romans used were 10^6 whereas Hindus used numbers as big as 10^53 with specific names as early as 5000 BC during the Vedic period. Even today, the largest used number is Tera: 10^12.
- Want to remember the value of Pi (3.1415926) in easy way ? You can do it by counting each word’s letters in ‘May I have a large container of coffee?
- The opposite sides of a dice always add up to seven.
- From number 0 to 1000, the letter ‘A’ only appears in 1000 (One thousand).