Answers

2015-01-08T21:04:06+08:00
77 because 6 is in the hundreth place look at 7 it's plus so it's 77
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2015-01-08T21:16:21+08:00
700. Because The number after 6 is 7 so add 1 to 6 and make the following numbers as zero. 
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700 no expanation cause its common sense
Well, yeah. But maybe the person who asked that never like Math or whatsoever.