Exercise 1.5 class 9 maths question 6 July 8, 2019 16 32 64 128 Exercise 1.5 class 9 maths question 6 part 2 Class 9 maths chapter 1 exercise 1.5 question 6 Class 9 maths exercise 1.5 question number 6 Unit 1 lesson 9 practice problems 6th grade Grade 6 unit 6 lesson 9 practice problems Math grade 9 exam Exercitii matematica clasa 9