Class 11 maths chapter 1 exercise 1.5 question 5 July 8, 2019 16 32 64 128 Class 11 maths chapter 1 exercise 1.5 question number 5 Math 11 class chapter 5 Math 11 class chapter 1 Grade 5 module 3 lesson 11 Unit 3 lesson 11 cumulative practice problems