We invite you to test your GMAT knowledge for a chance to win! Each week, we will post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for a free Manhattan GMAT Prep item. Tell your friends to get out their scrap paper and start solving!<\/p>\n
Here is this week’s problem:<\/p>\n
Ror positive integer m<\/em>, the m-th heptagonal number is given by the formula 5m<\/em>2<\/sup>\u00a0\u201c 3m<\/em>)\/2. For positive integer n<\/em>, the n<\/em>-th triangular number is the sum of the first n<\/em> positive integers. Which of the following is true for k<\/em>, the smallest triangular number that is also heptagonal?<\/p><\/blockquote>\n
<\/p>\n
To see the answer choices, and to submit your answer, visit our Challenge Problem Showdown<\/a> page on our site.<\/p>\n
Discuss this week’s problem with like-minded GMAT takers on our Facebook page<\/a>.<\/p>\n
The weekly winner, drawn from among all the correct submissions, will receive One Year of Access to our Challenge Problem Archive<\/a>, AND the GMAT Navigator<\/a>, AND Our Six Computer Adaptive Tests<\/a> ($82 value).<\/p>\n","protected":false},"excerpt":{"rendered":"
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