Question
A boat running downstream covers a distance of 48 km in
3 hrs and covering the same distance upstream in 12 hrs. What is the speed of a boat in still water?Solution
Downstream speed = 48/3 = 16 km/hr Upstream speed = 48/12 = 4 km/hr So speed of boat in still water = (16 + 4)/2 = 10 km/hr
Attributes are made of more than one simple attribute.
The boolean function f(x, y) = x OR (NOT(y)) is equivalent to which of the following boolean expressions?
Which is not in relation to the database.
Which protocol is used for managing and monitoring network devices and their functions?
Standard C library functions will always invoke a system call when executed from a single-threaded process in a UNIX/Linux operating system?
In syntax-directed translation, what are attributes associated with?
Which type of routing algorithm considers factors such as link cost and bandwidth to find the best path for data packets?
What does a crow's foot notation represent in an ER diagram?
Which of the following is an example of narrow or weak AI?
Port number of HTTPS?
