Question 1009776: how many 3 digit numbers have a reminder of 7 when divided by 9, and a remainder of 2 when divided by5?
Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! how many 3 digit numbers have a reminder of 7 when divided by 9, and a remainder of 2 when divided by5?
:
At least one, 457
;
-----------------------------------
How I got this answer, a number that is divided by 5 and has a remainder of 2
has to have a last digit either 2 or 7
A number that is divided by 9 and has a remainder of 7 and satisfies the above statement has to have a last digit of 7, the only digit number that satisfies that is 457
|
|
|