Question

There are 180 MC queues in a test where four marks for every correct answer and one mark for every wrong answer is assigned a candidate got 450 marks find the number of correct answers

Answer 1

Answer:

let the no of correct answer be x the no of wrong ans is 180-x

acc. to ques.

4(x)-1(180-x)= 450

5x-180=450

5x=450+180

5x=630

x=630/5=126

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