Which is correct:
"I know what the problem is" or "I know what's the problem "?

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I know what the problem is

This phrase is correct and commonly used in English.

This phrase is used to express understanding or awareness of a specific problem or issue.


  • I know what the problem is. Let's work on finding a solution.
  • She said she knows what the problem is, but she needs more time to explain.
  • Do you know what the problem is with the computer?
  • We need to figure out what the problem is before we can fix it.
  • He always knows what the problem is and how to solve it.

I know what's the problem

This phrase is incorrect in English. The contraction 'what's' should not be followed by 'the problem.'


  • I know what the problem is
  • I know what's wrong
  • I know what the issue is
  • I know what's going on
  • I know what's bothering you
The correct phrase is 'I know what the problem is.' The structure 'what the problem is' is the correct way to form a question or statement in English. The use of 'what's the problem' is incorrect because 'what's' is a contraction of 'what is' and should not be followed by 'the problem.'

Last updated: March 23, 2024

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