random topic i dont think ive seen anyone talk abt this before but i have such bad memory when it comes to recalling content. ive only seen this affect me recently with ext 1 maths when i kept having to see the solution to the same types of questions over and over again and when i would keep...
I've been trying to memorise further reflections for a while ( |f(x)|, f(|x|), |y| = f(|x|) etc.) but they're so confusing and similar to each other, does anyone have any tips to memorise them?
pls help with the following qs (idk where to even start)
1. How many selections of at least one object can be made from n distinct objects?
2. Recall that a digit sum of a number n is the value obtained when the digits of n
are added together. For example, the digit sum of...
If a committee of 6 members is chosen from 4 teachers and 6 students, what is the probability that it contains 2 teachers and 4 students.
Can someone please explain to me why we have to divide the answer by 10C6??