MathDB

A palindrome is a whole number that reads the same forwards and backwards. If one neglects the colon, certain times displayed on a digital watch are palindromes. Three examples are:

\boxed{1:01}

\boxed{12:21}

. How many times during a 12-hour period will be palindromes?

\text{(A)}\ 57\qquad\text{(B)}\ 60\qquad\text{(C)}\ 63\qquad\text{(D)}\ 90\qquad\text{(E)}\ 93

Problem Statement