1. Adil was born in 2015 . His younger sister Bav was born in 2018 . What is the minimum number of days by which Adil is older than Bav?
SOLUTION
732

The closest the birth dates can be are 31st December 2015 and 1st January 2018. Since 2016 was a leap year, the number of days these are apart is $1+366+365=732$.