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1. How to read ratio?

ex) 2:1, 10:1, 3:1...etc

2. How to read sport score?

ex) 4-2, 3-1(baseball or soccer)

53-48(basketball)
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A ratio of two to one, ten to one, three to one...etc.

You may also write (for ratios) 2 to 1, 10 to 1 and 3 to 1.

The final score was 4 to 2 in favor of the Yankees.

The Final score was New York 5, Boston 2.

John
Comments  
moon72961. How to read ratio?
You just say the numbers separated by the word "to."
In your examples: two to one; ten to one; three to one.
moon72962. How to read sport score?
four to two; three to one; fifty-three to forty-eight.

Or, if the context is clear, you could just say the numbers: four two; three one; fifty-three forty-eight.
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 JohnParis's reply was promoted to an answer.

pls let me how to read 2:3 in math

two to three

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moon72964-2, 3-1(baseball or soccer)

In soccer in AE or football in BE, they would be read in BE as four two and three one.