Question: When computing the Merkle tree root for a set of transactions in a block to be inserted in a blockchain, two successive transactions ( or

When computing the Merkle tree root for a set of transactions in a block to be inserted in a blockchain, two successive transactions

(

or intermediate hashes

)

are concatenated and their hash is calculated. Explain what is done if a transaction or an intermediate hash has no counterpart with which it can be concatenated.

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