Question

Age at which 1st tooth fell??

Answer 1

First in, first out. A child's 20 baby teeth, which often come in by age 3, usually fall out in the same order they came in. That means the lower center teeth (lower center incisors) are usually the first to go, around age 6 or 7.

Answer 2

 the first tooth fall around the age of 6 or 7.