Cybersecurity Class

please help ASAP

Question 9 What is the probability of having a 64-bit hash value with the following format: 00000X-X, where X is zero or one? p-2-64 / 2959 D-2464 /245 p. 245/2459 p=2^59 /2164 D Question 10 0.2 How does the Bitcoin mining work? Miners calculate the hash value of a group of transactions in addition to its digital signature Miners calculate the hash value of a group of transactions periodically by changing a random value Miniers calculate the hash value of a group of transactions periodically and also verify the digital signature of the pool manager Miners calculate the hash value of a group of transactions periodically