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प्रश्न
The following number are not perfect squares. Give reason.
1547
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उत्तर
A number ending with 2, 3, 7 or 8 cannot be a perfect square.
Its last digit is 7. Hence, 1547 cannot be a perfect square.
संबंधित प्रश्न
Show that each of the following numbers is a perfect square. Also, find the number whose square is the given number in each case:
4761
Which of the following numbers are perfect square?
81
Using prime factorization method, find which of the following numbers are perfect square?
225
By what number should each of the following numbers be multiplied to get a perfect square? Also, find the number whose square is the new number.
2880
By what numbers should each of the following be divided to get a perfect square ? Also, find the number whose square is the new number.
16562
By what numbers should each of the following be divided to get a perfect square? Also, find the number whose square is the new number.
3698
13 and 31 is a strange pair of numbers such that their squares 169 and 961 are also mirror images of each other. Find two more such pairs.
When a square number ends in 6, its square root will have 6 in the unit’s place
What is next square number of 49?
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.)
