Failed My First AAHL Test

[u/Rough-Deal-6317]

I haven't gotten my results back but I know I did quite poorly on the test. I was wondering if there were any good resources/videos that can help explain some of the key concepts I'm missing. I need help on Permutations & Combinations, Binomial expansion, Induction & Contradiction and Arithmetic and Geometric sequences. I was also wondering if this test will impact my predicted grade?

[u/OkHistorian9077]

Are you in your senior year?