Initially one of my full siblings and I received dna results from ancestry.com. which showed that our shared dna is 1752cm, and we were matched under close family - 1st cousin. I was a little confused as this meant we are only half-siblings, so I asked another sibling to test their dna, in order to see which of us was the full sibling. However, this full sibling also came under close family - 1st cousin with 1547 cm shared.
That means the three of us may have different fathers! This can't be possible. Could these dna results be incorrect? Could we still be full siblings but only share 25% dna?