Question

Find the greatest 4 digit
number which is a perfect square.

Answer 1

Answer:

9801

Step-by-step explanation:

Here we need largest 4 digit number which is a perfect square.

The largest 4 digit number is 9999. But it is not a perfect square.

Let us consider the smallest 5 digit number.. it is 10000.

Here 10000 is a perfect square(100*100=10000).

As the smallest 5 digit number is a perfect square of 100, the largest 4 digit perfect square should be 99*99.

So the required answer is 9801

Answer 2

$\underline\mathfrak{ANSWER:-}$

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Given that,

➭The greatest 4 digit number which is perfect square.

➭We know that.

✬The smallest  4 digit number is 1000.

➟The greatest 4 digit number is 9999.

➼We know that,

➟The square of 100 is 10000 or 1 more noteworthy than the biggest 4 digit number.

➼So, the closest square root of the largest perfect square is 99.

So. The square of 99 is

(99)^2=9801(99)2=9801

∴We can say that, the largest closest square of four digits is 99.

✬Hence, The greatest 4 digit number is 9999 and it is the closest square of 99.

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