There are n urns and m balls. If we put 3 balls in each urn 3 balls will be excess. If we put 4 balls in each urn 1 urn will be excess. Find no. of Urns (or) Balls?

3 Answers on this Question

1. n=7 & m=24 because equation would be : –
   (m-3)/3=n & m/4=n-1; u can get answer easily.

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2. no. of urns=n no.of balls=m;
   3n+3=m;
   4(n-1)=m;
   => 4n-4=3n+3;
   so n=7
   =>m=24…
   so 24 balls & 7urns..

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3. 2 urns, 9 balls.
   4(2)+1=9 and 3(2)+3=9
   You can’t put 4 balls in each of 7 urns with balls left over when 7*4=28. 28>24.

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