2011 in fours (eight fours!) Comment factorial(4)=24 4*24*24=2304 4*(factorial(4))to_the_power(squareroot(4))=2304 factorial(4)/squareroot(4)=288 (4+4/4)=5 2304-288-5=2011 Solution in eight fours: 4*(factorial(4))to_the_power(squareroot(4))-factorial(4)/squareroot(4)-(4+4/4) Barry Daniels Ref: plus.maths card in Xmas 2011 New Scientist Reply
factorial(4)=24
4*24*24=2304
4*(factorial(4))to_the_power(squareroot(4))=2304
factorial(4)/squareroot(4)=288
(4+4/4)=5
2304-288-5=2011
Solution in eight fours: 4*(factorial(4))to_the_power(squareroot(4))-factorial(4)/squareroot(4)-(4+4/4)
Barry Daniels
Ref: plus.maths card in Xmas 2011 New Scientist