 Hello and welcome to the session. Today I will help you with the following question. The question says what could be the possible once digit of the square root of the following number. Now let's see the solution. The number given to us is 657662025. Now 5 square is equal to 25 therefore square root of 25 is 5. So from this we conclude that when once digit of a number is 5 then its square root 5. Now the number given is this that is 657662025. Now the once digit in this case is 25 will have once digit. The answer is 5. So hope you enjoyed the session. Have a good day.