Challenge 5

[Colin J Davies]

This one is easy if you know the answer :-D You ask your new Shiny CRAY 7 LapTop to choose a decimal number between Zero and infinity, ( I don't Know how to do the symbols) What is the chance in percentage that the number will have a 7 as a numeral in the number Regardz Colin

[AlexMarbus]

Infinity negative of infinity positive? -- Alex Marbus

[PJ Arends]

10%

[Lost User]

Asymptotically 100% in all representations that I can imagine ;)

[Colin J Davies]

I won't ask you to show your workings either And your answer was close enough to be considered 100% correct ! Congratulations Yuri ! Regardz Colin Davies

[Ed Dixon]

Infinity would have an infinite number of digits. A random number between 0 and infinity would also have an estimated infinite number of digits. The chance of there not being a 7, or any other digit, is effectively zero. Ed Dixon

[Colin J Davies]

Exactly Ed, It is always important to remember how big infinity is for a 1 digit number it 10% eg 7 for a 2 digit number its 19% eg 7,17,27,37,47,57, 67,77,87,97 70,71,72,73,74 ,75,76,78,79 for a 3 digit number its about 28.9% for a 4 digit number its about 37.89% until with a infinite number its a 100% Regardz Colin