So guys.. I’m having a huge debate with my friends as to the answer of this question. Some say it’s 9, others say it’s 4. Here’s the question, 1 a/5 + 2 3/10 = 4 1/10. The one is apart of the mixed number btw. Hope someone can help me, thanks!

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.