please can you solve the question in Pic-1 manually with more details the solution is in Pic-2 but I dont understand them

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Question 6: Curtailment is used with a double-sampling plan where n1=60,c1=1,n2= 120,c2=2 and p=0.05. a. What is the probability of inspecting 60 units? b. What is the probability of inspecting 61 units? c. What is the probability of inspecting 62 units? (6) (9) 60 units are impected if we satence the lot band on seple 1ml/P(d1C1=1)+P(d1>C2=2) (b) 61 uniti are irpected if we have to take sopp 2p(d1=2) and the very fint iten we check fm sarpt 2 is delutine So d1+1=3>C2=2 curtail \& rject 0.225402975 , Pr=P(d1=2)PR0.05 (c) 62 we tike smph 2P(d1=2) fint wit is non difectio (1P) suad wit is difuction P Pr=P(d1=2)(1P)P0.807967207