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Data Sufficiency — determine Sunny's current facing direction Statements: I. If Sunny turns to his right and again turns to his right, he will be facing North. II. If Sunny walks some distance, turns left, walks again, he will face towards the left of Dinesh who is facing South. Choose the correct sufficiency option.

Difficulty: Easy

Correct Answer: I alone is sufficient while II alone is not sufficient

Explanation:


From Statement I
Two right turns = 180° turn. If after those turns Sunny faces North, then currently he must be facing South. ⇒ sufficient.


From Statement II
After walking and turning left, Sunny ends up facing the direction which is to the left of Dinesh (who faces South). Left of South is East. This gives a post-turn direction, not his current facing direction ⇒ insufficient.


Answer
I alone is sufficient while II alone is not sufficient. (Sunny is facing South now.)

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