hi sir pls suggest me simpel method of solveing this type of questioihns

Which is the biggest perfect square amongst the
following:-

15129, 12348, 23716, 20736

Enter the number in your calculator and press the square root sign.

You can also enter
square root 15129
into the Google search box.

sir i need to do with out calculator............it is an exam problem so plz suggest me any other method

Sure, I can help you with that. To find the biggest perfect square among the given numbers, you can follow this simple method:

Step 1: Find the square root of each number.
Step 2: Check if the square root is a whole number.
Step 3: If the square root is a whole number, then it is a perfect square.
Step 4: Compare the square roots of all the numbers to find the largest one.

Now let's apply this method to the given numbers:

1. For 15129, the square root is approximately 122.95, which is not a whole number, so it is not a perfect square.

2. For 12348, the square root is approximately 111.09, which is not a whole number, so it is not a perfect square.

3. For 23716, the square root is approximately 154.16, which is not a whole number, so it is not a perfect square.

4. For 20736, the square root is exactly 144, which is a whole number. Therefore, 20736 is a perfect square.

So, the biggest perfect square among the given numbers is 20736.