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Tigers will attack from behind, so he would stalk this guy and jump on his back. He would aim to bite the neck for a quick death.
If the person was killed near a village with a lot of other people around, the tiger would move the carcass. Otherwise, it would most likely consume the body in the area.
They would generally eat most of the muscle and organs first, so likely the thorax and abdominal cavity. They would leave the bones, especially larger items like the skull, until last or not eat those at all.
Yes, they do not generally eat the hair or skin of their prey items.
A full adult tiger would be able to eat just about the entire carcass. It may leave the skull behind.
I don't think the tiger would intentionally eat it. Unless ravenous it would probably spit out any pieces of fabric that it inadvertently ate.
It would likely eat the thorax and abdomen first. By consuming the abdominal contents that would shift the structures of the pelvis and limbs, so it would generally just continue to chew at the heavy muscled areas like the thighs and buttocks. It would encounter the clothing there and chew through it and spit it out if it got pieces inside its mouth.