Why do some people pronounce the number 0 (zero) oh (O) as on alphabet example 233030 is pronounced two three instead of zero they say it formal?

You're right, there's a common tendency to pronounce the number "0" (zero) as "oh" (O) in certain contexts, particularly when reading numbers out loud. Here's why:

* Clarity: Saying "oh" instead of "zero" helps avoid confusion, especially when reading numbers aloud. Imagine reading a number like 1000. If you say "one thousand zero zero zero," it could be misunderstood. Using "oh" makes it clearer: "one thousand oh oh oh."

* Formal contexts: This pronunciation is often preferred in formal settings like reading out serial numbers, telephone numbers, or financial figures. It's a more precise and unambiguous way to convey the information.

* Habit: Many people develop a habit of saying "oh" for zero because they've heard it used frequently in these situations.

It's important to remember that both "zero" and "oh" are acceptable pronunciations for the number 0. The choice often depends on the context and personal preference.