Advertisements
Advertisements
Question
Write five numbers for which you cannot decide whether they are squares.
Advertisements
Solution
A number whose unit digit is 2, 3, 7 or 8 cannot be a perfect square.
On the other hand, a number whose unit digit is 1, 4, 5, 6, 9 or 0 might be a perfect square (although we will have to verify whether it is a perfect square or not).
Applying the above two conditions, we cannot quickly decide whether the following numbers are squares of any numbers:
1111, 1444, 1555, 1666, 1999
RELATED QUESTIONS
Find the square root of the following number by the prime factorisation method.
400
Find the square root of the following number by the prime factorisation method.
7744
Find the smallest number by which the given number must bew multiplied so that the product is a perfect square:
23805
By just examining the unit digit, can you tell which of the following cannot be whole square?
1024
By just examining the unit digit, can you tell which of the following cannot be whole square?
1027
Find the smallest number by which 1152 must be divided so that it becomes a perfect square. Also, find the square root of the number so obtained.
The area of a square field is 5184 cm2. A rectangular field, whose length is twice its breadth has its perimeter equal to the perimeter of the square field. Find the area of the rectangular field.
By splitting into prime factors, find the square root of 194481.
Is 90 a perfect square?
If `root(3)(1906624) xx sqrt(x)` = 3100, find x
