Which tiles should be added to the model below to make zero? 000000
6 negative tiles
6 positive tiles
3 negative tiles and 3 positive tiles
O 6 negative tiles and 6 positive tiles

Out of 8 boys and 6 girls in a high school, a team of seven students is selected. what is the probability that three boys and four girls are selected? in your response, include an explanation and all of the calculations necessary to determine the probability.