moving out outdated js docs

olddocs/js/lessons/show-number/challenges.md

@@ -0,0 +1,39 @@
+# show number challenges
+
+My script. #docs
+
+### Challenge 0
+
+Welcome! This [guided tutorial](/xvogbz) will help you show a number on the LED screen!
+
+Show a number on the LED screen! One digit will display at a time, scrolling from left to right.
+
+Make lucky number 7 display on the screen!
+
+```
+basic.showNumber(7, 150)
+```
+
+### Challenge 1
+
+But we also should pause before showing another number.
+
+```
+basic.showNumber(7, 150)
+basic.pause(500) // ***
+```
+
+### Challenge 2
+
+Let's display the next multiple of 7 on the screen!
+
+```
+basic.showNumber(7, 150)
+basic.pause(500)
+basic.showNumber(14, 150) // ***
+```
+
+### Challenge 3
+
+Keep displaying multiples of 7 such as 21 and 28, but don't forget to add pauses between the numbers!
+