If you need to check your answers, here are the codes below:
- Challenge One - FIRST
- Challenge Two - 12588
- Challenge Three - SIX
- Challenge Four - ABABABA
- Challenge Five - $125
- Challenge Six - GIFT
- Challenge Seven - 7654321
- Challenge Eight - 20 + 4
- Challenge Nine - 9 + 9 = 18
- Challenge Ten - 55
- Challenge Eleven - 12:30
- Challenge Twelve - NINETY-ONE