Question

In a true-false test containing 50 questions, a student is to be awarded 2 marks for every correct answer and –2 for every incorrect answer and 0 for not supplying any answer. If Yash secured 94 marks in a test, what are the possibilities of his marking correct or wrong answer?

Answer 1

There could be following possibilities 
A = Attempted ,C = Correct, W= Wrong

Either Yash could have attempted 47 questions giving him 94 marks
If A = C = 47 then 94 marks

If A=49 , C=48, W=1 then 94 marks

Any other possibilites?

Answer 2

Questions attempted-47

Questions correct-49

Questions wrong-2

There could be many more possibilities