Strictly by the global IUCN definition, a species is Extinct (EX) when there is no reasonable doubt that the last individual has died. The Asiatic Cheetah (Acinonyx jubatus venaticus) is currently classified as Critically Endangered (CR) globally, with a small population surviving in Iran. However, it was declared extinct in India in 1952. The other species listed (Black Buck, Crocodile - generally, Indian Wild Ass) are not globally extinct, nor are they extinct in India. Given the likely context of a question from India, referencing a species extinct in India is probable.