Question
Train 'A' having a speed of 15 m/s can cross a man in 8
seconds. The length of train 'B' is 60 metres more than the length of 'A'. If the speed of 'B' is 45 m/sec and both trains are travelling towards each other, then find the time taken by them to cross each other.Solution
Length of train 'A' = 15 × 8 = 120 metres
Length of train 'B' = 120 + 60 = 180 metres
Relative speed = 15 + 45 = 60 m/sec
Required time = (120 + 180) ÷ 60 = 300 ÷ 60 = 5.0 seconds
What differentiates big data from traditional data in terms of its defining characteristics?
Which of the following SQL queries will return the second highest salary from a table Employee with columns Name and Salary?
Which of the following is not a measure of central tendency?
Which of the following characteristics is unique to TCP as opposed to UDP in a network communication scenario?
Which of the following strategies is most effective in avoiding selection bias when choosing a sample for analysis?
Which of the following techniques is most effective for detecting fraud in online transactions?
A team leader requests a dashboard to display key performance indicators (KPIs) for the sales department. What is the most important consideration when ...
Which of the following R functions is used to perform a t-test for comparing the means of two independent samples?
In a dataset with outliers, which measure is more robust than the mean?
What is the primary difference between Type 1 and Type 2 hypervisors?
Relevant for Exams:
