Question

siu
3. Find the greatest four digit number which
is a perfect square. (2)​

Answer 1

Answer:

Find the square root of 9999, which is 99.99. Take the next lower integer or 99 and find its square which is 9801. The greatest 4-digit number which is a perfect square is 9801.

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Answer 2

Answer:

9801

Step-by-step explanation:

the greatest 4 digit number is 9999 but it is not a prefect square

let us consider the smallest 5 digit number it is 10000

here 10000 is a prefect square (100*100=10000)

as the smallest 5 digit number is a prefect  square of 100 ,the greatest 4 digit prefect square should be 99*99

now find the square of 99 we will get the answer that is 9801