The puzzle was posted on Facebook by The Original 'Dude Comedy Showcase' and has garnered a whopping 15,000 likes and comments. The post reads: "Solve the riddle: I am a 4-digit number.

A new maths puzzle is leaving people scratching their heads as they struggle to work out the 100th digit in a sequence - as some say they 'don't even understand the question' ...

Lifestyle Maths-Whizz Baffling 4-digit maths riddle sends internet wild as thousands fume 'I don't get it' Some were convinced of the answer and blasted others for "over-thinking" it while others ...