Question

Which of the following is not a perfect square? *

a. 256
b. 576
c. 1089
d. 1849

Answer 1

1. Step-by-step explanation:

Squares of all integers are known as perfect squares. All perfect squares end in 1, 4, 5, 6, 9 or 00 (i.e. Even number of zeros). Therefore, a number that ends in 2, 3, 7 or 8 is not a perfect square.

Answer 2

Given:

Which of the following is not a perfect square?

Solution:

Know that, a number that can be expressed as the product of the number with itself is known as a perfect square number.

$\[\begin{array}{l}a.\,\,256 = 16 \times 16\\b.\,\,576 = 24 \times 24\\c.\,\,1089 = 33 \times 33\\d.\,\,1849 = 43 \times 43\end{array}\]$

Hence, all the given numbers are the perfect square.