Discussion

Explanation:

A, D and G each one has only one wrong answer and no blank answers.

∴ They must have obtained the key from the mastermind directly.

∴ A introduced 46 as the wrong answer, D introduced 17 as the wrong answer and G introduced 25 as the wrong answer.

H and E must have obtained the key from A as they got 46 as the wrong answer.

∴ H further introduced 92 as the wrong answer and E introduced 90 as the wrong answer.

F must have obtained the key from H and E and found that answers 92 and 90 did not match. He left these blank and introduced 14 as the wrong answer in addition to 46 (which was the same answer though wrong) for H and E.

I must have obtained the key from D and E. Answers 17, 46, 90 didn’t match and he left these as blank. He also introduced 27 as the wrong answer.

C must have obtained the key from I and introduced 56 as the wrong answer.

B must have obtained the key from E and G. Answers 25, 46, 90 didn’t match and he left these blank. He also marked 96 as the wrong answer.

∴ Combining all the above diagrams we get:

From the flowchart, we see that A and D have only 1 source (mastermind).

Even C has only one source.

Only B has 2 sources E and G.

Hence, option (b).

» Your doubt will be displayed only after approval.


Doubts


Feedback

Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.


© 2024 | All Rights Reserved | Apti4All