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AMC 8
1988 AMC 8
25
25
Part of
1988 AMC 8
Problems
(1)
1988 AJHSME #25
Source:
6/21/2011
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:
1
:
01
\boxed{1:01}
1
:
01
,
12
:
21
\boxed{12:21}
12
:
21
. How many times during a 12-hour period will be palindromes?
(A)
57
(B)
60
(C)
63
(D)
90
(E)
93
\text{(A)}\ 57\qquad\text{(B)}\ 60\qquad\text{(C)}\ 63\qquad\text{(D)}\ 90\qquad\text{(E)}\ 93
(A)
57
(B)
60
(C)
63
(D)
90
(E)
93