Maths Trick
#Quick Answer
(2005)² = ?
Similarly (5005)² = ?
Note :
This trick apply only for those numbers unit digit is 5 & all mid digit is 0.
Eg. (2005)²
Trick
By the image
Unit digit 5, i.e. 5² is compulsory,
& after write all digits (not 5).
Count zero, above image no. of zero=2
Thus, write down one zero & square of 1st digit(above image, 1st digit is 2)
Similarly,
Eg. (5005)²
Qus/1/ (4005)² = ?
Qus/2/ (9005)² = ?
Do it themselves.
Ans/1/ 16040025
Ans/2/ 81090025
Qus/3/ (400005)² = ?
Apply above trick
(400005)²
(4)²|000|40000|(5)²
160004000025 Ans.
Qus/4/ (70000005)²
Apply above trick
(70000005)²
(7)²|00000|7000000|(5)²
4900000700000025 Ans.
Solve :
(60005)²
(3000005)²
Ans. 3600600025
9000030000025
*****
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