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प्रश्न
A three digit perfect square is such that if it is viewed upside down, the number seen is also a perfect square. What is the number?
(Hint: The digits 1, 0 and 8 stay the same when viewed upside down, whereas 9 becomes 6 and 6 becomes 9.)
उत्तर
The three digit perfect squares that looks similar when viewed upside to down = 196 and 961.
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