Class 7 Exercise -1.3 Q-4,5,6,7 Solutions | Class 7 Maths Chapter- 1 INTEGERS | NCERT CBSE

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Ex-1.3 Q-4 to 7 (Part-2)

Integer Ex 1.3 Chapter- 1 || Class 7th Math New Book 2023 || New Edition 2023
In this video we will be discussing exercise 1.3 new book of class 7 and old book exercise 1.4 class 7 NCERT solutions

Class: 7
Subject: Maths
Chapter: Integers
Topic Name: NCERT Ex 1.3
Questions: 4 to 7 solutions

Solutions for Questions
Exercise 1.3
Q4. Write five pairs of integers (a, b) such that a / b = - 3 One such pair is (6,-2) because 6 / (- 2) = (- 3)

Q5. The temperature at 12 noon was 10 degree C above zero. If it decreases at the rate of 2 degree C per hour until midnight, at what time would the temperature be 8 degree C below zero? What would be the temperature at mid-night?

Q6. In a class test (+3) marks are given for every correct answer and (-2) marks are given for every incorrect answer and no marks for not attempting any question. (i) Radhika scored 20 marks. If she has got 12 correct answers, how many questions has she attempted incorrectly? (ii) Mohini scores -5 marks in this test, though she has got 7 correct answers. How many questions has she attempted incorrectly?

7. An elevator descends into a mine shaft at the rate of 6 m/min. If the descent starts from 10 m above the ground level, how long will it take to reach - 350 m.

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