DenX2

Hi i came across this practice question that i have no idea on how to go about it. Five balls are randomly drawn without replacement from a bag containing 4 red balls and 6 black balls. What is the probability that at least 3 red balls will be drawn? the answer is 0.2619 I've tried tree diagrams and the formulas but none of them work, may someone please teach me how???

i'm taking the log of 1, not the imaginary number the imaginary number is just the exponent which can then be made the coefficient of ln e or 1 im only learning high school math, so there may be something that's missing (or IS rather than may)

e^i(pi) + 1 = 0 if we modify it like so e^(i(pi)) = -1 e^(i(pi))^2 = 1 i^2(pi)^2 = ln1 = 0 so -pi^2 = 0 which is obviously wrong... so why?