Advertisements
Advertisements
Question
Using prime factorization method, find which of the following numbers are perfect square?
441
Advertisements
Solution
441 = 3 x 3 x 7 x 7
Grouping them into pairs of equal factors:
441 = (3 x 3) x (7 x 7)
There are no left out of pairs. Hence, 441 is a perfect square.
RELATED QUESTIONS
Which of the following numbers are perfect square?
32
Which of the following numbers are perfect square?
111
Which of the following numbers are perfect square?
121
Using prime factorization method, find which of the following numbers are perfect square?
343
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.
605
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.
5103
Show that the following number is not perfect square:
4058
The square of 0.7 is ______.
Let x and y be natural numbers. If x divides y, then x3 divides y3.
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.)
