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The number of ways in which 16 sovereigns can be distributed among 3 applicants such that each applicant does not receive less than 3 sovereigns is:
  • a)
    30
  • b)
    40
  • c)
    35
  • d)
    36
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
The number of ways in which 16 sovereigns can be distributed among 3 ...
Let x, y, z be the number of sovereigns received by the 3 applicants. Then x≥3,y≥3,z≥3 and x+y+z=16.
Let u=x-3,v=y-3 and w=z-3,then u≥0,v≥0,w≥0
So, u+3+v+3+w+3=16
Or, u+v+w=7
The total number of the solutions of the given equation is 7+3-1C3-1= 9C2 = 36.
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InstructionsA visa processing office (VPO) accepts visa applications in four categories – US, UK, Schengen, and Others. The applications are scheduled for processing in twenty 15-minute slots starting at 9:00 am and ending at 2:00 pm. Ten applications are scheduled in each slot.There are ten counters in the office, four dedicated to US applications, and two each for UK applications, Schengen applications and Others applications. Applicants are called in for processing sequentially on a first-come-first-served basis whenever a counter gets freed for their category. The processing time for an application is the same within each category. But it may vary across the categories. Each US and UK application requires 10 minutes of processing time. Depending on the number of applications in a category and time required to process an application for that category, it is possible that an applicant for a slot may be processed later.On a particular day, Ira, Vijay and Nandini were scheduled for Schengen visa processing in that order. They had a 9:15 am slot but entered the VPO at 9:20 am. When they entered the office, exactly six out of the ten counters were either processing applications, or had finished processing one and ready to start processing the next.Mahira and Osman were scheduled in the 9:30 am slot on that day for visa processing in the Others category.The following additional information is known about that day.1. All slots were full.2. The number of US applications was the same in all the slots. The same was true for the other three categories.3. 50% of the applications were US applications.4. All applicants except Ira, Vijay and Nandini arrived on time.5. Vijay was called to a counter at 9:25 am.How many UK applications were scheduled on that day? Correct answer is '0'. Can you explain this answer?

InstructionsA visa processing office (VPO) accepts visa applications in four categories – US, UK, Schengen, and Others. The applications are scheduled for processing in twenty 15-minute slots starting at 9:00 am and ending at 2:00 pm. Ten applications are scheduled in each slot.There are ten counters in the office, four dedicated to US applications, and two each for UK applications, Schengen applications and Others applications. Applicants are called in for processing sequentially on a first-come-first-served basis whenever a counter gets freed for their category. The processing time for an application is the same within each category. But it may vary across the categories. Each US and UK application requires 10 minutes of processing time. Depending on the number of applications in a category and time required to process an application for that category, it is possible that an applicant for a slot may be processed later.On a particular day, Ira, Vijay and Nandini were scheduled for Schengen visa processing in that order. They had a 9:15 am slot but entered the VPO at 9:20 am. When they entered the office, exactly six out of the ten counters were either processing applications, or had finished processing one and ready to start processing the next.Mahira and Osman were scheduled in the 9:30 am slot on that day for visa processing in the Others category.The following additional information is known about that day.1. All slots were full.2. The number of US applications was the same in all the slots. The same was true for the other three categories.3. 50% of the applications were US applications.4. All applicants except Ira, Vijay and Nandini arrived on time.5. Vijay was called to a counter at 9:25 am.What is the maximum possible value of the total time (in minutes, nearest to its integer valu e) required to process all applications in the Others category on that day? Correct answer is '200'. Can you explain this answer?

InstructionsA visa processing office (VPO) accepts visa applications in four categories – US, UK, Schengen, and Others. The applications are scheduled for processing in twenty 15-minute slots starting at 9:00 am and ending at 2:00 pm. Ten applications are scheduled in each slot.There are ten counters in the office, four dedicated to US applications, and two each for UK applications, Schengen applications and Others applications. Applicants are called in for processing sequentially on a first-come-first-served basis whenever a counter gets freed for their category. The processing time for an application is the same within each category. But it may vary across the categories. Each US and UK application requires 10 minutes of processing time. Depending on the number of applications in a category and time required to process an application for that category, it is possible that an applicant for a slot may be processed later.On a particular day, Ira, Vijay and Nandini were scheduled for Schengen visa processing in that order. They had a 9:15 am slot but entered the VPO at 9:20 am. When they entered the office, exactly six out of the ten counters were either processing applications, or had finished processing one and ready to start processing the next.Mahira and Osman were scheduled in the 9:30 am slot on that day for visa processing in the Others category.The following additional information is known about that day.1. All slots were full.2. The number of US applications was the same in all the slots. The same was true for the other three categories.3. 50% of the applications were US applications.4. All applicants except Ira, Vijay and Nandini arrived on time.5. Vijay was called to a counter at 9:25 am.When did the application processing for all US applicants get over on that day?

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The number of ways in which 16 sovereigns can be distributed among 3 applicants such that each applicant does not receive less than 3 sovereigns is:a)30b)40c)35d)36Correct answer is option 'D'. Can you explain this answer?
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