8th IMO Set-A Stage- 1 Answer Key from class 1st to 12th

Class 1 to 5    : https://www.scribd.com/doc/249142544/IMO-Answer-key-Class-1-TO-5

Class 6 to 10  : https://www.scribd.com/doc/249142638/IMO-answer-key-Class-6-TO-10

Class 11 & 12 : https://www.scribd.com/doc/249142672/IMO-CLASS-11-TO-12