An algebra problem by A Former Brilliant Member

Algebra Level pending

a number when divided by 9 leaves remainder 1 .same number divided by 11 leaves remainder 2 .same number divided by 13 leaves remainder 3.what is the number?


The answer is 640.

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1 solution

Ratnadip Kuri
Jan 11, 2015

I did it using simple coding in C++. This code return the result is 640 :

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#include<stdio.h>

int main()
{
    int number;

    for(number = 9;;number+=9)
    {
        int testnum = number+1;

        if(testnum%11==2 && testnum%13==3)
            break;
    }

    printf("Number is: %d",number+1);

    return 0;
}

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