I’ve observed that people read the digit zero as oh as though it were the letter O. For example, in a telephone number where 0800 is oh eight hundred.
Why? Where was this decided, or can anyone prove that it is correct? Where can we use this form?
I’ve observed that people read the digit zero as oh as though it were the letter O. For example, in a telephone number where 0800 is oh eight hundred.
Why? Where was this decided, or can anyone prove that it is correct? Where can we use this form?
The number zero is usually pronounced that way when "spelling" out a number, not only in telephone numbers.
As Sandeep Dhamija's link shows, it's also used in many other cases, like in James Bond's call sign double-oh-seven: 007.
Mind you, when it is important that whatever you are spelling out is understood correctly, even over a not-so-good communication line, the digit zero is pronounced as "zero". Actually, in that case, 4 can become "fower" and 9 can become "niner" to facilitate understanding by the receiving party.