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Please don't delete my question again brainly. This is all the context given. No more in the problem.

Please Dont Delete My Question Again Brainly This Is All The Context Given No More In The Problem class=

Sagot :

  • It's. '='

Here given that

  • A={People in the classroom}
  • B={mouths in the classroom}

So

Every person has one and only mouth

Means

  • n(A)=n(B)

So

  • A=B
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