Answer : Explanation : It can be possible in only B.C. i.e, Before Christ. That was about 2000 years ago.Given In 1990 B.C = 2000 1990 = 3990 years ago, a person is 15 years Old=

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In 1990 a person is 15 years old. In 2000 that same person is 5 years old. How can this be possible?