engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 Quantitative Aptitude Algebra Linear Equation in 2 or more Variables
In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 75 questions and scores 125 marks, the number of questions he attempts correctly is
1
35
2
40
3
36
4
42