A remembers that B celebrated his birthday after 17^th but before 22^nd of June, while B remembers that the birthday was celebrated before 24^th but after the 20^th June. On which date was the birthday celebrated ?

Question

Question

This question was previously asked in

CGPSC Prelims Aptitude Test 2015 Official Paper

Answer 1

The correct answer is option 3.

Logic:

⇒ A remembers that B celebrated his birthday after 17th but before 22nd of June.

So, the birthday can be on 18, 19, 20 and 21^st June.

⇒ while B remembers that the birthday was celebrated before 24th but after the 20th June.

Now, the birthday can be on 21^st, 22^nd, and 23^rd June.

So, the common inference from both the statement is that B's birthday is celebrated on 21^stJune.