lhotseface received 3 Kudos for post If each term in the sum a1+a2+a3+.....+an is either 7 or 77.

GiverPostDate
gmatbuster8If each term in the sum a1+a2+a3+.....+an is either 7 or 7728-Mar-2015
sm1510If each term in the sum a1+a2+a3+.....+an is either 7 or 7703-Feb-2015
bgpowerIf each term in the sum a1+a2+a3+.....+an is either 7 or 7708-Dec-2012

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