Post tile sponsor: Corp Info box
Simplify:
(i) 7777 + 777 + 77 + 7
7777
777
77
7
Ans: 8638
ii) 23456 - 8245 - 746
= 23456 – (8245 + 746)
= 23456 - 8991
Ans: 14465
iii) 8475632x9999
=8475632 (10000-1)
= 84756320000-8475632
Ans: 8.474784437x1010
iv) 584732x 625
= 584732 x 54
= 5847320000/16
Ans: 365457500
v) 3608 x 3608
= (3608)2
= (3600 + 8)2
= (3600)2 + (8)2 + 2 x 3600 x 8
= 12960000 + 64 + 57600
Ans: 13017664
vi) 5898 x 5898
=(5898)2
= (5900 - 2)2
= (5900)2 + (2)2 - 2 x 5900 x 2
=34810000 + 4 - 23600
Ans: 34786404
Contributor: Pallavi
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