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IMSO 2005 Mathematics - International Short Answer Question 25

IMSO Maths · IMSO 2005 Mathematics - International Short Answer

Question 25

The display of a digital clock is MM : DD : HH : mm, meaning Month : Day : Hour : minute. The display ranges are Month 01–12, Day 01–31, Hour 00–23 and Minute 00–59. How many times in the year 2005 does the display show a palindrome? A palindrome reads the same forward and backward. Examples: 12 : 31 : 13 : 21 and 01 : 02 : 20 : 10.