Fun Math

1. There are eight balls which are even, but one is heavier and cannot feel the difference by guessing. You are given a balance with no weights and you have only two chances to weigh the balls. How will you identify the different ball.?
2. There are 3 sticks equal in length and must be broken into 9 pieces by breaking each stick into 3 pieces. You are given 3 chances to break and you cannot break three sticks together. Maximum number of sticks can be broken together is two. How you are going to break these sticks?
3. There was a grandfather and a grandson in 1932. In that year, the age of the grandson was shown by the last two digits of his birth year. Grandfather's situation was also same. Find the ages of them.
4. Do you know that we can write nine multiplications which includes all the nine significant digits only once. 
• Ex- $48\times159=7632$
• What are the rest of it.
5. To be continued...