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A number is said to be a perfect square if it has an integer as its square root.

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Question: A number is said to be a perfect square if it has an integer as its square root. Which of the following numbers is a perfect square?

Options:

  1. 18
  2. 20
  3. 25
  4. 30

Correct Answer: 25

Solution: 

25 is a perfect square because its square root is 5, which is an integer.

A number is said to be a perfect square if it has an integer as its square root.

Practice Questions

Q1
A number is said to be a perfect square if it has an integer as its square root. Which of the following numbers is a perfect square?
  1. 18
  2. 20
  3. 25
  4. 30

Questions & Step-by-Step Solutions

A number is said to be a perfect square if it has an integer as its square root. Which of the following numbers is a perfect square?
  • Step 1: Understand what a perfect square is. A perfect square is a number that can be expressed as the square of an integer.
  • Step 2: Identify the number you want to check. In this case, we are checking the number 25.
  • Step 3: Find the square root of the number. The square root of 25 is 5.
  • Step 4: Check if the square root is an integer. Since 5 is an integer, we confirm that 25 is a perfect square.
  • Perfect Squares – A perfect square is a number that can be expressed as the square of an integer.
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