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Q.1.150 workers were engaged to finish a piece of work in a certain number of days.Four workers dropped the second day,four more workers dropped the second day and so on.It takes 8 more days to finish the work now.Find the number of days in which the work was completed. Q.2.Show that the sum of n terms of a G.P. of common difference r beginning with the p th term is r p-q times the sum of an equal number of terms of the same sries beginning with q th term.

Q.1.150 workers were engaged to finish a piece of work in a certain number of days.Four workers dropped the second day,four more workers dropped the second day and so on.It takes 8 more days to finish the work now.Find the number of days in which the work was completed.


 


Q.2.Show that the sum of n terms of a G.P. of common difference r beginning with the pth term is rp-q times the sum of an equal number of terms of the same sries beginning with qth term.

Grade:12

1 Answers

Vinay Arya
37 Points
11 years ago

Sorry, I have done a mistake in the second line of the first question.The second line is as follows:

Four workers dropped the second day,four more workers dropped the third day and so on

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