Two boys, Tom and Harry, are running a 100 meter race. The first time they race Tom beats Harry by 5 meters. To make things fair, the next time they race Tom stands 5 meters behind the starting line.

Who wins the second race (assuming they run at the same speed as the first race)?

A contractor is doing work for 7 days at your home. You have a gold bar that is worth \$7000. You need to pay him \$1000 every day and \$7000 in total. You have to pay him in gold by using the gold bar. How can you pay him \$1000 worth of gold everyday by cutting the gold bar only twice?

By cutting the gold bar twice, you can have 3 pieces of gold.

Let the gold bar pieces be GB1, GB2 and GB3. They are worth \$1000, \$2000 and \$4000 respectively.

Day1: Give GB1

Day2: Take GB1, Give GB2

Day3: Give GB1

Day4: Take GB1, GB2 and give GB3

Day5: Give GB1

Day6: Take GB1, Give GB2

Day7: Give GB1

The day before yesterday, Chris was 7 years old. Next year, she’ll turn 10. How is this possible? When is Chris birthday?