A passcode to enter a building is a sequence of 4, single digit numbers (0,9) and repeated digits aren't allowed. Suppose someone doesn't know the passcode and randomly guesses a sequence of 4 digits. What is the probability that they guess the correct sequence?

Somone me i want to know what 18 hours out of 24 hours in a fraction

What is the prime factorization of 230

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)