There are only r red counters and g green counters in a bag. A counter is taken at random from the bag. The probability that the counter is green is 4/9. The counter is put back in the bag. 4 more red counters and 2more green counters are added into the bag. A counter is taken from the bag. The probability that the counter is green is 10/23. Find the number of red counters and the number of green counters that were in the bag originally.

Can someone pls ! pls answer all. no explanation needed..

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?

The john nash mall used 17,4000 kilowatt hours in may, with a peak load of 92 kilowatts. the demand charge is $5.95 per kilowatt, and the energy charge is $0.08 per kilowatt hour. the fuel adjustment charge is $0.017 per kilowatt hour. what is the total electricity cost for may?