Let speed of boat in still water and speed of boat in upstream be ‘12x’ km/h and ‘11x’ km/h, respectively. Speed of stream = 12x – 11x = x km/h Speed of boat in downstream = 12x + x = 13km/h So, 13x = 260/4 => x = 5 Speed of boat in still water = 12 × 5 = 60 km/h Desired time = 40/60 x 60 = 40 minutes
Which of the following is an instant messaging application ?
(a) WhatsApp
(b) Google Talk
(c) Viber
Select the correct answer from the codes given below :
Which of the following is not an output device ?
What type of software application is Microsoft Word?
Which layer of the OSI model is used for ensuring that data is delivered without errors or loss?
Which type of computer chips are said to be volatile?
In web search, finding a large number of documents with very little relevant information is termed:
Cell phones use ____________ to access the Internet.
In MS-DOS 6.22, which part identifies the product uniquely?
Which key, when combined with another, is utilized to execute a specific task?
When a group of computers and devices are connected together, it is called ______.
