But i heard that 3rd is something like spoken form and it's grammatically correct to use 3d. For example 9th 3rd 301st what do we call these special sounds? I know both are valid.
What is the most correct form for 3 in ordinal form: Do we put them as numbers or. When we use words like first, second, third, fourth or 1st, 2nd, 3rd, 4th, in sentences, what will be the best way to write these?