Question

19-1 =20 ?how can any one answer pls
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Answer 1

Step-by-step explanation:

In roman numerals 19=IXX now if you take II

I according to question we are left with

XX BECAUSE BY CONDITION 1 WILL BE CANCELLED IN THE ROMAN NUMBERS SO XX WILL REMAIN XX MEANS 20

SO IF TAKE ONE FROM 19 WE GET 20 MARK AS BRAINLIEST ANSWER AND FOLLOW ME