Answers

2015-10-03T11:25:11+05:30
You can concentrate by deep thinking on the matter you are doing means studying ,just think you are in that topic which you are studing this will make perfect . you can make it more perfect by thinking on that matter again and again without seeing or observing the book . 
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2015-10-03T12:04:43+05:30
You can concentrate by ignoring other things and think about the thing for which u need concentration
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