i found a trick to square any number who ends in 5. For ex, if you want to find a square of 65, then you take 25 as your answer's last two digit. Then take the first digit of the number, in this case it is 6, add 1 to it and you get 7. Then multiply 7x6=42. This are your first two digits of the a...
i found a trick to square any number who ends in 5. For ex, if you want to find a square of 65, then you take 25 as your answer's last two digit. Then take the first digit of the number, in this case it is 6, add 1 to it and you get 7. Then multiply 7x6=42. This are your first two digits of the a...