3. which answer choice contains all the factors of 10?
a. 1, 10
b. 1, 2,5, 10
c. 2,5
d. 1, 2,5

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

What is the inverse of the function f(x) = 2x + 1?