VnExpress International on MSN

Why practical math problems often fail students

A simple math problem sparked heated debate on Chinese education forums two years ago.
来自MSN

It looks like a simple math sum but has left people scratching their heads... can you solve it?

A deceptively simple math problem has left the internet stumped, proving it may be far trickier than it appears at first glance. The mathematical brain teaser, posted Friday by X user @BholanathDutta, ...