How old is Mrinal?
Statements:
1. Mrinal’s mother is 20 years older than him.
2. Mrinal’s brother is 3 years younger than him.1
Both statements taken together are sufficient to answer the question, but neither statement alone is sufficient.
2
Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question.
3
Statement 1 and 2 together are not sufficient, and additional data is needed to answer the question.
4
Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question.