Intelligent Math Puzzle – Challenge 83
If you REALLY enjoy solving complicated math puzzle and exercise your brain, then this math challenge is just for you!
Challenge:
(-70) + (-60) + (-50) + (-40) + … + n = ?
If the pattern of the above operation continues, which of the following could be the answer?
A- 90
B- 100
C- 150
D- 170
E- 200
The Absolute Best Book to challenge your Smart Student!
The correct answer is D.
The first number in the equation is -70 and the next item is 10 more than the previous number. If the pattern continues, the sum of all numbers till number +70 is 0. Why?
The next number is 80 and the number after that is 90.
80 + 90 = 170
Reza is an experienced Math instructor and a test-prep expert who has been tutoring students since 2008. He has helped many students raise their standardized test scores--and attend the colleges of their dreams. He works with students individually and in group settings, he tutors both live and online Math courses and the Math portion of standardized tests. He provides an individualized custom learning plan and the personalized attention that makes a difference in how students view math.
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