Answers

2015-11-07T14:18:45+05:30
Practise makes a man perfect. Practise well your time for solving sums will decrease to a great extent

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2015-11-07T16:18:19+05:30
With the use of calculator or practise sums daily and keep target that in 1 minutes you have to compleat a medium size sum, then automalically u can do a big sum in short period of time.
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