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Sequence

Expert replies
Source: — Problem Solving |

by galaxian » Fri Jun 24, 2011 3:00 pm
If you divide the sequence into sub seq with 3 nos. -5,0,5 the sum is 0.
When you come to 250th term, it would be a part of the sequence :

250th, 251st & 252th term = -5,0 & 5.
So Ans should be -5.
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by edvhou812 » Fri Jun 24, 2011 10:21 pm
Assume that the 250th term is the beginning of new set, check by dividing 249 by 3 and find that there are 83 sets before the 250 term, so 250th term must be -5. -5+0 = -5
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