Exercise 2.3 class 10 maths question 5 July 8, 2019 16 32 64 128 Class 10 maths chapter 2 exercise 2.3 question 5 Class 10 maths exercise 2.3 question number 5 Go math 5th grade chapter 10 lesson 10.2 homework Eureka math grade 5 module 2 lesson 10 problem set