I need help on 1-4 please!

1. In a certain town, 70% of the households own a cellular phone, 20% own a pager, and 10% own both a cellular phone and a pager. The percentage of households that own neither a cellular phone nor a pager is: (a) 0% (b) 20% (c) 80% (d) 90% (e) None of these 2. The chance that a person will contract AIDS after a sexual contact with an infected partner has been estimated to be 1/4. This means: (a) A person will be infected after exactly 4 sexual contacts with infected partners. (b) Of 1000 people having sexual contacts with infected partners, exactly 250 will become infected. (c) Of 200 people having sexual contacts with infected partners, about 50 will become infected. (d) In exactly 25% of all sexual contacts with infected partners, the infection will spread. (e) Of 20 people having sexual contacts with infected partners, it is very likely that exactly 5 people will become infected. 3. A deck of playing cards has 52 total cards of which 12 are face cards. What is the probability of choosing 3 cards in a row with replacement and getting three picture cards? (a) 0.1% (b) 0.5% (c) 1.0% (d) 1.2% (e) 2.0% 4. Suppose a loaded die has the following model: Face 2 3 4 5 6 Probability 0.3 0.1 0.1 0.1 0.1 0 .3 If this die is thrown and the top face shows an even number, what is the probability that the die shows a 2? (a) 0.1 (b) 0.2 (c) 0.5 (d) 0.6 (e) none of these