Question

5. Which of the following numbers are perfect squares?
11, 12, 16, 32, 36, 50, 64, 79, 81, 111, 121 ?​

Answer 1

Here,

16, 36, 64, 81 and 121 are the perfect squares.

Explanation :

• 16 = 4²
• 36 = 6²
• 64 = 8²
• 81 = 9²
• 121 = 11²

So, these numbers are the squares of the numbers 4,6,8,9 and 11 respectively.

Square of numbers from 1 to 10 :

• 1² = 1
• 2² = 4
• 3² = 9
• 4² = 16
• 5² = 25
• 6² = 36
• 7² = 49
• 8² = 64
• 9² = 81
• 10² = 100