Its really difficult..

Among the first 1 million numbers, 40 is a number that is pretty unique.

Can you find out why ?

#Difficultlogic

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Comments

40=1+3+9+27?? Or how about -40 degree being the unique temperature at which Celsius and Fahrenheit scales correspond? :P

Baidehi Chattopadhyay - 7 years, 1 month ago

no then 1+2+4+8=15, so it could also be unique, there are n numbers, which follow the above pattern, and there are also other degrees of temp. between 1 and a million like water boils at 100 deg Celsius etc to be unique, so why among 1 to a million 40 can be unique by your statement......But well done for giving knowledge about 40.