Given the network diagram below, determine the probability that the project will finish within 26 weeks of its start. Times on the diagram are in weeks. 
Definitions:
Buy His Interest
To purchase someone's stake, shares, or assets in a company or property, effectively transferring ownership or control to the buyer.
Liability to Third Parties
A legal obligation to compensate individuals not directly involved in a contract or agreement for any injuries or damages caused.
Right to Dissociate
The legal ability of a partner to leave a partnership under laws governing business partnerships, potentially triggering buyout provisions or dissolution of the partnership.
Dissociate
To separate or remove oneself from an association, relationship, or partnership.
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