39th B.P.S.C. (Pre) 1994
The number of teeth that are developed twice in the lifetime of a human being is –
a4
b12
c20✓ Correct
d28
Explanation
In a human’s lifetime, 20 teeth develop twice, and 12 teeth develop only once.
general-science
In a human’s lifetime, 20 teeth develop twice, and 12 teeth develop only once.