It's ninety per cent certain that you will die.
Actually, it's 100% certain that you will die at some time.
Yes.[STRIKE]Are my sentences absolutly wrong?[/STRIKE]
Is my sentence absolutely wrong?
You can write ninety percent, ninety out of a hundred or nine out of ten. They are synonyms. You can't write "ninety percent out of a hundred."
Yes.
"It's ninety percent out of a hundred certain that you will die."
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