Lindsay spins a spinner once and then flips a fair coin twice. The spinner is shown below.
What is the probability of the spinner landing on an odd number and the
coin landing on tails both times?

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Anyone know? will mark brainliest if you're correct!

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?