|By User123 (User123) on Sunday, October 03, 2004 - 10:01 pm: Edit|
what is W?
|By Cherrybarry (Cherrybarry) on Sunday, October 03, 2004 - 10:03 pm: Edit|
The way I remember these is difference of the two digits times 9.
|By User123 (User123) on Sunday, October 03, 2004 - 10:12 pm: Edit|
I don't get it!!! Can you explain how you got this a little better!
|By Abcdefg (Abcdefg) on Sunday, October 03, 2004 - 10:16 pm: Edit|
It could also be 8...
|By Optimizerdad (Optimizerdad) on Monday, October 04, 2004 - 06:35 am: Edit|
'WP' has a value of 10*W + P, and 'PW' has a value of 10*P + W. 'WP - PW' = 10W + P - 10P -W = 9(W-P), which = 72.
So, W - P = 8; also, W must be a single digit i.e. <= 9, and P must be > 0 (otherwise 'PW' would just be 'W'). The only possible solution is W=9, P=1.
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