When positive integer n is divided by 25, the remainder is 13. What is the value of n?
1) N < 100
2) When N is divided by 20, the remainder is 3
C*
How should I think about remainders? I find these types of problems confusing.
When positive integer n is divided by 25, the remainder is 13. What is the value of n?
1) N < 100
2) When N is divided by 20, the remainder is 3
Path wrote:Rey,
In above solution, once you find first value of N which satisfy both the eqn, You can add LCM of 20 and 25 to first value. So other values of N will be 63, 163, 263 etc
I find this method much faster but want to check whether this can be applied to any remainder equation.
sachin.w wrote:I used the number pluggin approach until I got this no: 63.
When I was about to hit B as the answer, I saw the option A ..
Highly unlikely that A couldn't have been there for a reason. .
thought that there must be numbers greater than 100 which will satisfy B.
So Chose C :D
sachin.w wrote:sure thing. thanks a lot, Ron :)