The question below is followed by two statements numbered I and II. Decide whether the data given in the statements are sufficient to answer the question.
On which day of the week did Nikhil reach Delhi?
I. Nikhil left home on a Monday and reached Delhi before the Friday of that week.
II. Nikhil reached Delhi one day before his sister’s birthday, which fell on a Thursday that week.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Statement II alone is sufficient, but statement I alone is not sufficient.
In data sufficiency, a statement is sufficient only if it leads to one definite answer; each statement is first tried alone.
Statement I alone:
Nikhil reached Delhi on Monday, Tuesday, Wednesday or Thursday; the day is not fixed: not sufficient
Statement II alone:
The birthday was on Thursday, and Nikhil reached one day earlier
He reached Delhi on Wednesday: sufficient