Ex 1.3

Chapter 1 Class 7 Integers
Serial order wise

This video is only available for Teachoo black users

This video is only available for Teachoo black users

This video is only available for Teachoo black users

Get live Maths 1-on-1 Classs - Class 6 to 12

### Transcript

Ex 1.3, 7 In a class test containing 10 questions, 5 marks are awarded for every correct answer and ( 2) marks are awarded for every incorrect answer and 0 for questions not attempted. (i) Mohan gets four correct and six incorrect answers. What is his score? Total questions = 10 Marks for correct answer = +5 Marks for incorrect answer = 2 Marks for no attempt = 0 Marks for 4 correct answers = 4 5 = 20 Marks for 6 incorrect answers = 6 ( 2) = 12 Therefore, Total marks = 20 + ( 12) = 20 12 = 8 Ex 1.3, 7 In a class test containing 10 questions, 5 marks are awarded for every correct answer and ( 2) marks are awarded for every incorrect answer and 0 for questions not attempted. (ii) Reshma gets five correct answers and five incorrect answers, what is her score? Marks for 5 correct answers = 5 5 = 25 Marks for 5 incorrect answers = 5 ( 2) = 10 Therefore, Total marks = 25 + ( 10) = 25 10 = 15 Ex 1.3, 7 In a class test containing 10 questions, 5 marks are awarded for every correct answer and ( 2) marks are awarded for every incorrect answer and 0 for questions not attempted. (iii) Heena gets two correct and five incorrect answers out of seven questions she attempts. What is her score? Marks for 2 correct answers = 2 5 Marks for 5 incorrect answers = 5 ( 2) Marks for 3 no attempts = 3 0 Total marks = 10 + ( 10) + 0 = 10 10 + 0 = 0

Made by

#### Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.