Question

a
A man has 15 balls,
one out of which is a
bit lighter. If he is
given a manual
weighing balance
such that each pan
has
maximum
capacity of 5 balls,
how many minimum
number
times
does he need to
weigh to definitely
identify the lighter
ball?
of
5
7​

Answer 1

Answer is 7

Twice he would weight a grp of 5 balls

then he could idenitfy which 5 weight less

then by taking weights of 5 balls seperatly

so total is 7