U used the 20 and 15 twice; I follow untill 1700, then I take the 020 from the lower sign, then I take 8+9-9-3+7-7+5-5=5; 20x5=100. QED in another way
up close & personal commented on 06.14.06
do you like odd numbers best?
Smart Set commented on 06.13.06
Thanks, wim. You could get to 1600 like this (the sign on the building says Church Road, Block 15):
8896-3996=4900. The square root of 4900 is 70. (70+15)x20=1700. (20x20)-(20x15)=100. 1700-100=1600. QED.
wim commented on 06.13.06
congrats on your # 1600. If I 'd have more time today I could figure out how to form 1600 with the numbers on the board. I see no rivals. One sells, the other lets it happen