Discover a world of knowledge at Westonci.ca, where experts and enthusiasts come together to answer your questions. Join our Q&A platform to get precise answers from experts in diverse fields and enhance your understanding. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.

A ball contains 16 identical balls of which 4 are green. A boy picks a ball at random from the bag and replaces it. if this is respected 5 times, what is the probability that he. 1. did not pick a green ball. 2. picked a green ball at least three times?​