Question: Answer: A) Alzheimer:464 genes Multiple sclerosis:1101 genes Stroke:3154 genes b) 14 genes c)Since it is very clear and understanding since it was organized and illustrated all the information easily and simply. Question: Answer: Question: Answer: 25-4=21 play at least one sport 21-15=5 play hockey 21-16=6 play basketball 4 play neither 6+5=11 people from 21 so 10 people left and are the common 10 people play both basketball and hockey Question: Answer: 50-40= 10 study physics 50-32=18 study math 18+10=28 50-28=22 common a) 22 students b) 10 Question: Answer: Tv= 90%x 400=360 families Computer=60%x400=240 400-360=40 computer 400-240=160 tv Common=200 have both tv and computer