Copyright © University of Cambridge. All rights reserved.
'One Million to Seven' printed from http://nrich.maths.org/
Show menu
Start by putting one million ($1 000 000$) into the display of your calculator.
This text is usually replaced by the Flash movie.
Can you reduce this to $7$ using just these six buttons - the $7$ key and add, subtract, multiply, divide and equals as many times as you like?
What is the shortest way can you find to do it?