USING THE BALANCE AT FIRST WEIGH 6 BALLS TAKING 3 AT EACH
SIDE OF BALANCE. IF BOTH ARE EQUAL U R LEFT WITH ONLY TWO
BALLS AND WEIGHING THEM IN 2ND ATTEMPT U WILL KNOW WHICH ONE
IS LESSER. eLSE IF IN THE FIRST WEIGH ONW WOULD BE LESSER.
FROM THESE 3 BALLS TAKE ONLY TWO BALLS AT PUT IT IN BALANCE.
U WILL KNOW WHICH ONE IS LIGHTER