Question

3. The unit digit of square root of 169 is​

Answer 1

Answer:

13 is the square root of 169

Answer 2

169 ∵ Unit place of 169 is 9 ∴ 169 is a perfect square number Sum of digits = 1 + 6 + 9 = 16 Extreme digit (charam ank) of square root will be either 1 or 3 and tens place digit will be 1. Thus hence square root of 169 = 13