Data Sufficiency — Day of the week: On which day was Sahil's birthday? Statement I: Sahil celebrated his birthday the very next day after Arun's birthday. Statement II: Sahil's sister was born on the third day of the week and two days after Sahil was born. Decide which statements are sufficient to answer the question. Choose the correct sufficiency option.
Verbal Reasoning
Data Sufficiency
Difficulty: Easy
Choose an option
-
AStatement I alone is sufficient, but Statement II alone is not sufficient.
-
BStatement II alone is sufficient, but Statement I alone is not sufficient.
-
CBoth statements I and II together are sufficient, but neither alone is sufficient.
-
DEither statement I or statement II alone is sufficient.
-
EEven both statements I and II together are not sufficient.
Answer
Correct Answer: Statement II alone is sufficient, but Statement I alone is not sufficient.
Explanation
AssumptionWeek starts on Monday (standard in reasoning questions): Day 1 = Monday, Day 2 = Tuesday, Day 3 = Wednesday, ...
Statement IISister on the 3rd day and two days after Sahil ⇒ Sahil was born on Day 1 ⇒ Monday.
Statement IOnly relative to Arun's day; without Arun's day, cannot determine.
Final AnswerStatement II alone is sufficient, but Statement I alone is not sufficient.