A billion being 109 is, at this point, universal. To my knowledge, only the very old in the UK still hold to the “long billion”.
I find that fascinating, because everywhere I’ve lived (and everywhere I haven’t lived but have had reason to be aware of the phone scheme), mobile phone numbers (which often aren’t formatted in the same way as landline numbers) are 10 digits and start with a leading zero.
Growing up, landlines usually didn’t include area code, and would be 8 digits, starting with a non-zero number. But adding an area code would mean adding 2 digits, the first of which is always 0.
So basically, if I see a phone number without a leading zero, I’m going to be very confused, unless I have reason to believe that it includes country code.
At least on my part, you guess correctly.
A billion being 109 is, at this point, universal. To my knowledge, only the very old in the UK still hold to the “long billion”.
I find that fascinating, because everywhere I’ve lived (and everywhere I haven’t lived but have had reason to be aware of the phone scheme), mobile phone numbers (which often aren’t formatted in the same way as landline numbers) are 10 digits and start with a leading zero.
Growing up, landlines usually didn’t include area code, and would be 8 digits, starting with a non-zero number. But adding an area code would mean adding 2 digits, the first of which is always 0.
So basically, if I see a phone number without a leading zero, I’m going to be very confused, unless I have reason to believe that it includes country code.