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Pure Mathematics
 Online Tutoring : Forum : Quiz Questions - Mathematics : Pure Mathematics
Topic Topic: Summing strategy Post ReplyNew Question
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System
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Joined: 26 June 2005
Posts: 918
Posted: 27 July 2005 at 11:45am | IP Logged Quote System

QUIZ QUESTION #412
1 + 2 + 3 + .... + 38 + 39 + 40 = ?

[Hint: You do not need to add the number one by one. If done correctly, requires only 1-3 minutes to complete.]
    A.  

720

    B.   780
    C.   480
    D.   820
 QUIZ QUESTION #412 created by Tutor9221 on 26 July 2005 at 11:54am

Correct answer: D    Correct clicks: 49.68%  Wrong clicks: 50.32%
 
    A.   [36 clicks 11.69%] 
 
    B.   [47 clicks 15.26%] 
 
    C.   [72 clicks 23.38%] 
 
    D.   [153 clicks 49.68%] 
 
Please discuss this quiz question.
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