# I am sure there is an easy answer!!

• Aug 19th 2008, 05:35 AM
stevej63
I am sure there is an easy answer!!
insert brackets, + or - between the following digits: 2,3,4,5,6,7 to arrive at an answer of 20
• Aug 19th 2008, 05:58 AM
kalagota
Quote:

Originally Posted by stevej63
insert brackets, + or - between the following digits: 2, -3,-4,+5,+6,+7 to arrive at an answer of 20

also, we can have -2+3+4-5+6+7

notice that the sum of the digits is 27..
you have to subtract a total of 7.. :)
• Aug 19th 2008, 06:11 AM
stevej63
Thanks but???
Hi kalagota

Doesn't your solution give an answer of 13, as you have taken off 7 aswell as not adding it on
• Aug 19th 2008, 06:19 AM
kalagota
Quote:

Originally Posted by stevej63
Hi kalagota

Doesn't your solution give an answer of 13, as you have taken off 7 aswell as not adding it on

huh? i said that 2+3+4+5+6+7 = 27..

so, what two numbers gives a sum of 7?
a) 3 and 4
b) 2 and 5

so, put the negative signs before them..
• Aug 19th 2008, 06:24 AM
stevej63
obviously im confused
I need to acheive an answer of 20, not 27. Using the 2, -3,-4,+5,+6,+7 or the other solution -2+3+4-5+6+7, I get an answer of 13, where am I going wrong???
• Aug 19th 2008, 06:37 AM
Niall101
(2)(3)(4)-5-6+7=20 where (2)(3)=6 (Clapping)
• Aug 19th 2008, 06:40 AM
kalagota
Quote:

Originally Posted by stevej63
I need to acheive an answer of 20, not 27. Using the 2, -3,-4,+5,+6,+7 or the other solution -2+3+4-5+6+7, I get an answer of 13, where am I going wrong???

oh i see, my mistake...

wait...

(2)(3)(4)-5-6+7

EDIT: didn't notice it has been solved..