Your secret PIN (personal identification number) has 4 digits (digits can be from 0 to 9). Eve is trying to guess your PIN and can check one PIN every 10 seconds. What is the probability that she guesses your PIN if she has 3 minutes to guess? Enter your answer as a percentage rounded to 4 decimal places. Six people, A, B, C, D, E, and F, are going to play a bridge tournament. In how many ways can they split into three pairs? Decrypt the following ciphertext, which was encrypted using a Caesar Cipher. Note: The ciphertext does not include spaces. Enter five plaintext letters per blank. ciphertext: NLYTHUFILSPLCLKPAZLUPNTHT plaintext: ciphertext: HJOPULDHZBUIYLHRHISL plaintext