how to make 4 9's equal 20? [closed]

Question

9 9 9 9=20， you can add +,-,*,/ or () between the number. how to make them equal. four 9 must be separated and less than 10.

Heaven forbid that this site should fill up with such pointless questions. I wish I could vote to close.

user8570 · Answer 1 · 2011-03-22 11:34:03Z

up vote 1 down vote

(99 / 9) + 9 = 20

Is that what you meant?

answered Mar 22 '11 at 11:34

user8570

1

four 9 must be separated and less than 10. – enjoylife Mar 22 '11 at 11:44

Community · Answer 2 · 2013-05-12 06:28:21Z

up vote 1 down vote

9+( 9()+9 ) /9 = 9 + 99/9 = 20

9^0+9^0+9+9=1+1+18=20

edited May 12 at 6:28

Community♦
1

answered Mar 22 '11 at 11:36

Holowitz
1

closed as not a real question by t.b., Asaf Karagila, Jonas Meyer, Arturo Magidin, Aryabhata Mar 23 '11 at 19:01