Let total work = 30 units (LCM of 15 and 10) Efficiency of ‘A’ = (30/15) = 2 units/day Efficiency of ‘B’ = (30/10) = 3 units/day Combined efficiency of ‘A’, ‘B’ and ‘C’ = (30/4) = 7.5 units/day Efficiency of ‘C’ = 7.5 – (2 + 3) = 2.5 units/day Required time taken = (30/2.5) = 12 days
Which of the following SQL queries will return the second highest salary from a table Employee with columns Name and Salary?
Why is sampling crucial in data analysis, especially when handling large datasets?
What is the main advantage of using data storytelling in presenting data-driven insights?
In stratified sampling, how are the population groups divided?
Which test is commonly used to check stationarity in time series data?
Which of the following best highlights how data analysts contribute to achieving organizational goals?
A logistics company wants to reduce delivery delays using predictive analysis. What should they focus on?
What is the primary purpose of the Reduce phase in MapReduce?
A data analyst is tasked with improving operational efficiency by examining employee performance metrics and identifying bottlenecks. Which of the follo...
Which of the following functions in Excel is used to combine data from multiple columns into one?
