On which day of the week was Arjun 39 s birthday if the week starts from Monday Statements I Arjun c...........

Logical Reasoning (CUET) Calendar

On which day of the week was Arjun's birthday if the week starts from Monday?

(I) Arjun celebrated his birthday the very next day on which Sahil celebrated his birthday.
(II) The sister of Arjun was born on the fifth day of the week and two days after Arjun was born.

This questions was previously asked in

CUET General Aptitude Test Previous Year Question Paper (2023)

If the data in statement I alone are sufficient to answer the question.

If the data in statement II alone are sufficient to answer the question.

If the data either in statement I alone or in statement II alone are sufficient to answer the question.

If the data in both statement I and II together are necessary to answer the question.

We analyze both statements to check their sufficiency:

It states that Arjun’s birthday was the next day after Sahil’s birthday.
However, it does not provide any information about the actual day of Sahil’s birthday.
Since we do not know Sahil’s birthday, we cannot determine Arjun’s birthday.
Statement I alone is insufficient.

It states that Arjun’s sister was born on the fifth day of the week.
Since the week starts from Monday, the fifth day is Friday.
Arjun’s sister was born two days after Arjun, which means Arjun was born on Wednesday.
This directly gives the answer to the question.
Statement II alone is sufficient.