Question
 A man can row the boat x km downstream and the same
distance upstream in 12 hours. Also, he can row the boat 5x km downstream in 10 hours. At what time, he can row the x km distance upstream?Solution
Let the downstream speed of the boat be ‘a’km/h According to the question, (5x/a) = 10 Or (x/a) = (10/5) Or (x/a) = 2 = time taken to travel ‘x’ km downstream Let the upstream speed of the boat be ‘b.’ km/h Also, (x/a) + (x/b) = 12 2 + x/b = 12 x / b = 10 hours
Which of the following in not valid about an email address?
 Which protocol is used to send emails over the internet?
SMTP stands for ?
Which of the following protocol is not related to E-mail
What does the "@" symbol in an email signify?
 Which of the following software is used to create text documents?
When sending an e-mail, the _____ line describes the contents of the message.
Which out of the following is the combination of keys used to copy a selected text in word processing software?
Which protocol is used for sending emails?
An attachment in an E-mail can be:Â
Digital photosÂ
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