Question

Which is the two digit number which square root is same to its digit

Answer 1

It's answer is very easy
81
because
8+1=9

Answer 2

✨Answer:

81 or (9)^2.

✨ Step-by-step explanation:

➡️Two digit squares are :

16, 25, 36, 49, 64 and 81.

Now,

16 = 4^2 but 1+6 = 5 ≠4

25 = 5^2 but 5 +2 = 7 ≠5

36 = 6^2 but 3 + 6 = 9 ≠6

49 = 7^2 but 4 + 9 = 11 ≠ 7

64 = 8^2 but 6 + 4 = 10 ≠ 8.

✨ 81 = 9^2 and 8 + 1 = 9.

So,

✔️81 IS A PERFECT SQUARE WHOSE SUM OF DIGITS IS EQUAL TO ITS SQUARE ROOT.