[Grammar] What's their phone number?

sobhan477

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Can we say: What's their phone number? Why don't we use a plural form and add a "s" to the noun?
For example
What's their phone number?
or
What are their phone numbers?
 
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Tdol

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Re: hi

If you're talking about two people who have one phone number, then the singular makes sense.
 

Rover_KE

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Re: hi

Welcome to the forum, sobhan.

Please note that I have changed your thread title.

Extract from the Posting Guidelines:

'Thread titles should include all or part of the word/phrase being discussed.'
 

emsr2d2

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It also works if you don't know the sex of the person you're talking about.

John: I'll be at my cousin's house this weekend so can you phone me there please?
Sarah: OK. What's their phone number?

If John had clarified the sex by using his cousin's name, Sarah would say "What's his/her phone number?"
 

Skrej

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Re: hi

If you're talking about two people who have one phone number, then the singular makes sense.

This extends to a company or organization as well.
 

Tdol

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Re: hi

Yes, and yes. ;-)
 
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