This made me laugh - what do kids these days expect? 2+2 congrats A*?
No you bunch of no brained ******* it's a hard question because it's a question you'll get right if you've studied hard enough and gone through all the relevant content for the damn class. It's one damn question, but yeah, it's the make or break between getting that A.
All you had to know to solve this is that the probability of two events happening is the product of each event's individual probability. That + being able to simplify.
I was one of the people sitting that test and trust me, it was difficult. This question is an A-Level question for 18 year olds! So please, shut up about saying it's easy when it actually wasn't.
They don't teach basic probability in the UK? It's easy as hell.
I remember learning the quadratic equation last year and I did Edexcel maths, not sure if I'd class it as basic probability tho. I thought the papers were easy, but I only got a B couldn't do this now lmao...
The Zero Factor Principle tells me that at least one of the factors must be equal to zero. Since at least one of the factors must be zero, I'll set them each equal to zero.