Let the total work = L.C.M of 50 and 20 = 100 units Then, efficiency of ‘A’ alone = 100 ÷ 50 = 2 units/day Combined efficiency of ‘A’ and ‘B’ = 100 ÷ 20 = 5 units/day So, efficiency of ‘B’ = 5 – 2 = 3 units/day So, work done by ‘B’ alone in 25 days = 3 × 25 = 75 units So, percentage of work completed by ‘B’ = (75 ÷ 100) × 100 = 75%
In hypothesis testing, what does a p-value less than 0.05 typically indicate ?
When identifying business problems for data analysis, what is a critical first step?
Which of the following semantic HTML tags is best suited for defining a block of navigation links?
Which of the following is an example of metadata in a database?
Which visualization tool is best suited for creating interactive dashboards with advanced business intelligence capabilities?
Which of the following is a key difference between Big Data and Traditional Data?
In OOP, what term best describes the relationship where one object is a part of another but cannot exist independently?
In developing a fraud detection model for online transactions, a data analyst should use a technique capable of identifying anomalous patterns. Which of...
In SQL, which type of JOIN will return all rows from the left table and the matching rows from the right table, filling with NULLs where there is no match?
A system has three resources R1,R2,R3, with total instances 5, 3, and 4, respectively. Processes P1,P2,P3 are allocated (2, 1, 2), (1, 1, 1), and (1, 1,...
