14 Apr '15 19:421 edit

Here's a recreational mathematics problem that recently 'went viral':

http://www.theguardian.com/science/alexs-adventures-in-numberland/2015/apr/13/can-you-solve-the-singapore-primary-maths-question-that-went-viral

"Can you solve the maths question for Singapore schoolkids that went viral?"

--Alex Bellos (13 April 2015)

(The problem was given to the better 14-15 year old students in Singapore.)

I solved it through a straightforward logical process-of-elimination.

(My father gave me more complex logical problems when I was younger.)

Have fun trying it before looking up a solution on the internet.

http://www.theguardian.com/science/alexs-adventures-in-numberland/2015/apr/13/can-you-solve-the-singapore-primary-maths-question-that-went-viral

"Can you solve the maths question for Singapore schoolkids that went viral?"

--Alex Bellos (13 April 2015)

(The problem was given to the better 14-15 year old students in Singapore.)

I solved it through a straightforward logical process-of-elimination.

(My father gave me more complex logical problems when I was younger.)

Have fun trying it before looking up a solution on the internet.