I need serious help with these ten problems...someone please help me!! :/
1.) What is the probability of a person getting at least one question right on a multiple choice test with 10 questions (choices A-D for each question), if they guess at all of the questions?
2.) The daily number is a 3 digit number ranging from 000-999, and each of the three digits is drawn from a bin with digits 0-9.
a.) What is the probability of getting at least one of the numbers right?
b.) What is the odd against getting at least one of the numbers right?
3.) There are 5 senators and 3 representatives to form a 4 person committee. What is the probability that there will be the same number of senators and representatives?
4.) If a person is dealt a 5 card hand from a standard deck of playing cards, what is the probability that the person is dealth a pair ( 2 cards of the same rankL 2's, 3's, 4'w, ...)?
5.) On hundred students were surveyed, and 25% said they like math, 45% said they like english, and 5% said they like both math and english. IF a students is randomly surveyed what is the probability that they student does not like math or english?
6.) A shipment of ten calculators contains two defective ones. If you randomly choose four calculators, what is the probability that exactly one will be defective?
7.) A nickel, dime, and a quarter are tossed. What is the probability that the nickel and dime will show heads and the quarter will show tails?
8.) Which has a greater probability: drawing an ace and a ten card (ten, jack, queen, or king) from a regular deck of 52 cards, or drawing an ace and ten card from two decks of regular playing cards?
9.) What is the probability of being dealth an ace and a king if you are dealt two cards from a standard deck of cards?
10.) What is the probability of guessing someone's MAC pin number if you know the first two digits of the four digit pin number (assume the pin number is random)?
PLEASE HELP ME...IT'S SO URGENT! THANKS!