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The transaction Merkle Tree root value in a Bitcoin block is calculated using ___

25. The transaction Merkle Tree root value in a Bitcoin block is calculated using,

1. Hash of transactions
2. Previous block's hash
3. Number of transactions
4. None of the above

Answer: A) Hash of transactions

Explanation:

By hashing together pairs of TXIDs, a Merkle root is generated, which gives you a brief yet unique fingerprint for all the transactions in a block.