Question

find the largest number of 2 digits which is a perfect square​

Answer 1

Step-by-step explanation:

Let us try the numbers starting from 1 onward which gives perfect square on squaring.

The squares upto 3 does not produce 2 digit numbers. Let us check 4 onward

4 × 4 = 16

5 × 5 = 25

6 × 6 = 36

7 × 7 = 49

8 × 8 = 64

All the above are smaller than 81.

9 × 9= 81

10 × 10 = 100. It becomes three digit number. Hence 81 is the greatest two digit number, which is a perfect square.

Answer 2

Answer:

Step-by-step explanation:Largest 2 digit number is 99

Now, we will find the square root of 99, we get 18 as remainder.

Now whatever number which is remaining at the last we will subtract it from 99

18 is remaining at the last, So when we subtract it from 99

i.e. 99 - 18 = 81

So, the largest 2 digit number which is a perfect square is 81

Plz mark brainliest.