human
Calculate the probability of two dependent events occurring without drawing a tree diagram There are \( 4 \) red balls and \( 3 \) yellow balls in a cup ![A cup with 4 red and 3 yellow balls in it. The balls are all the same size.]() Kate picks out two balls at the same time.

What is the probability at least one ball is red? \( \frac{24}{42} \)
gpt
Does not work out all possibilites when given an 'at least' question in probability