Tuesday, February 28, 2012

this week's MGRE Math Beast Challenge

From here:

Identical blocks are stacked in rows to create a tower 24 rows tall. If the top row of the tower consists of four blocks, and each row below the top row consists of eight more blocks than the row directly above it, how many blocks are in the entire tower?

This is a "numeric entry" problem, i.e., you have to type in the solution as opposed to clicking a multiple-choice option. Good luck! My own answer will appear in the comments, but I can tell you right now that this sort of problem always makes me groan because I can never remember the formulas for rapid summing of a series of numbers. Looks as if I'll be doing this the hard way.


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