1. Calculate using suitable rearrangements:
(i) I +2 +3 +4 +996 +997 +998 +999
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I. (996+4)+(997+3)+(998+2)+(999+1)
1000+1000+1000+1000
4000
hence, solved
ii. (4957x100)x4
495700x4
1982800
hence,solved
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