Book Maths Puzzle Logical Reasoning Direction Sense

A certain street has 1000 buildings. A sign-maker is contracted to number the houses from 1 to 1000. How many zeroes will he need?

Read Solution (Total 3)

Book Other Question

There are 9 coins. Out of which one is odd one i.e weight is less or more. How many iterations of weighing are required to find odd coin?