Can You Solve This ?

Indonesia
March 16, 2009 2:30am CST
Here the rules : Use the numbers: 1, 5, 6, 7 and one-time The Operators : multiple, div, add, subtract, brackets, rank can used it more than once The Result Must be : 21 Post very math calculation you've used. heheheh happy calculating my friends.
1 response
• India
16 Mar 09
can you clearly mention what all mathematical operators i can use.i did not get you. can i square it?
• Indonesia
16 Mar 09
multiple = * div = / add = + subtract = - brackets = () rank = ^ these are the mathematical operators, you can use this operators more than once, but for the 1 5 6 7 you can used only one time
• India
16 Mar 09
i got 210,but not 21, its simply not possible.did you forget to mention anything