Indefinite Articles

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foodprint

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Hello everyone.

I have a simple sentence, but I am struggling a lot with articles. Could you tell me which of the following is correct please?

1. This test has a sensitivity of 95% and a specificity of 97%.

2. This test has a sensitivity of 95% and specificity of 97%.

3. This test has sensitivity of 95% and specificity of 97%.


Thank you.
 

Rover_KE

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We'll be pleased to welcome you to the forum and answer your question, foodprint, when you've corrected the information in your Member Info.

You appear to have made random selections from the options available.
 

foodprint

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Rover_KE

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Welcome to the forum, foodprint.:-D

I'd only use #1, but others may disagree.
 

PeterCW

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I might use #3 in conversation but in writing it would be #1.
 

Yankee

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