On which day of the week was birthday of Sahil ?
Statements:
1. Sahil celebrated his birthday the very next day on which Arun celebrated his birthday.
2. The sister of Sahil was born on the third day of the week and two days after Sahil was born.

I alone is sufficient while II alone is not sufficient

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II alone is sufficient while I alone is not sufficient

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Either I or II is sufficient

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Neither I nor II is sufficient

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Both I and II are sufficient

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Solution

The correct option is C II alone is sufficient while I alone is not sufficient
I does not mention the day of the week on the birthday of either Arun or Sahil.
According to II, Sahil's sister was born on Wednesday and Sahil was born two days before Wednesday i.e. on Monday.

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On which day of the week was birthday of Sahil ?Statements:1. Sahil celebrated his birthday the very next day on which Arun celebrated his birthday.2. The sister of Sahil was born on the third day of the week and two days after Sahil was born.

The correct option is C II alone is sufficient while I alone is not sufficientI does not mention the day of the week on the birthday of either Arun or Sahil.According to II, Sahil's sister was born on Wednesday and Sahil was born two days before Wednesday i.e. on Monday.

On which day of the week was birthday of Sahil ?
Statements:
1. Sahil celebrated his birthday the very next day on which Arun celebrated his birthday.
2. The sister of Sahil was born on the third day of the week and two days after Sahil was born.

The correct option is C II alone is sufficient while I alone is not sufficient
I does not mention the day of the week on the birthday of either Arun or Sahil.
According to II, Sahil's sister was born on Wednesday and Sahil was born two days before Wednesday i.e. on Monday.