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Q1
:
1904 x 1904 = ?
A
3654316
B
3632646
C
3625216
D
3623436
E
None of these
Solution
ANS:
C
- 3625216
1904 x 1904
= (1904)
2
= (1900 + 4)
2
= (1900)
2
+ (4)
2
+ (2 x 1900 x 4)
= 3610000 + 16 + 15200.
= 3625216.
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