## 4 In a class test, (+5) marks are given for every correct answer and (-2) marks are given f incorrect answer and no marks for not

4 In a class test, (+5) marks are given for every correct answer and (-2) marks are given f incorrect answer and no marks for not attempting any question. (a) A’ scored 80 marks. If ‘A’ has got 20 correct answers, how many questions did ng. Integers are ne associative for For any intege

incorrectly?

(b) B’scores O mark in this test, though ‘B’ has got 10 correct answers. How many quest ‘B’attempted incorrectly?

(c) ‘C’ scores-5 marks by attempting 13 questions. How many questions has ‘C’ atten. correctly and how many has ‘C’ attempted incorrectly?

## Answers ( )

A= he got 10 incorrect answers…

B=he got 25 incorrect answers

c=he scored 3 correct answer and 10 incorrect

Answer:he got 10 incorrect question