Are you smart in maths??? Solve this problem that has puzzled billions of internet users.

This math problem first appeared in a test in Singapore’s elite high school students. The question came viral on the internet when it baffled students and also no internet user has been in a position to give a single answer. The question was meant for 15 and 16 year old students in elite secondary school.

 If you believe you can solve the quiz drop your answer in the comment column and compare your answers with others.