7175
/www/nrich/html/content/id/7175/
1
2011-02-01T00:00:01
<?xml version="1.0" encoding="UTF-8"?>
<mdoxml version="1.0"><br></br>
<p>The ten digits of a digital clock are shown below.<br></br>
<mdo:image alt="" height="109" src="2011%2023.PNG" width="620"></mdo:image><br></br>
I have a $12$ hour digital clock which shows the time, using four digits, on a piece of glass, so it can be seen from both sides. At what time between $3$ o'clock and $10$ o'clock does the time look the same from both sides?<br></br>
<br></br>
<br></br>
If you liked this problem, <a href="http://nrich.maths.org/1840&part=">here is an NRICH task</a> which challenges you to use similar mathematical ideas.<br></br>
<br></br>
</p></mdoxml>
<?xml version="1.0" encoding="UTF-8"?>
<mdoxml version="1.0"><br></br>
Time $05:20$.<br></br>
<br></br>
<br></br></mdoxml>
2
3
0
1
1
0
0
Weekly Problem 24 - 2011
Weekly Problem 24 - 2011
Using, Applying and Reasoning about Mathematics
Visualising
Transformations and their Properties
Reflections
Secondary Mapping Document
Transformations