161?85?65?89=100
then use + or - in place of ? and take + as m,- as n then find value of m-n

options:
1)3
2)-1
3)1
4)-3

• 161-85-65+89=100
  so m=1, n=2 => (m-n)=-1
• 10 years agoHelpfull: Yes(67) No(2)
• 161-85-65+89=100
  so m=1, n=2 => (m-n)=-1
  ::NOTE::
  here, we are using 2(two) "-" symbole and 1(one) "+" symbole to get the out put as 100 so + = m = 1
  and - = n = 2
• 10 years agoHelpfull: Yes(20) No(0)
• we have to replace question mark with either + or - ,so that sum come out to be 100 and then let number of + to be m and number of - to be n and find m-n ,which here is 1-2=-1
• 10 years agoHelpfull: Yes(11) No(1)
• how to take m as 1 and n as 2 ??? please explain
• 10 years agoHelpfull: Yes(9) No(0)
• 161-85-65+89=100
  no. of n's=2
  no. of m's=1
  so,m-n=1-2=-1
• 10 years agoHelpfull: Yes(6) No(0)
• 161 -85-65+89=161-61=100
  hear m is + so, there is only one +,
  n is - so there is 2 - symbol
  therfore m=1,n=2
  m-n=-1
• 10 years agoHelpfull: Yes(1) No(0)
• 161-85-65+89=100
• 10 years agoHelpfull: Yes(0) No(0)
• dont understand the answer. What is the logic behind it?
• 10 years agoHelpfull: Yes(0) No(0)
• 161-85-65+89
• 10 years agoHelpfull: Yes(0) No(0)
• Any body got mail from Yesterdays interview at kolkata(1st feb)?
• 10 years agoHelpfull: Yes(0) No(0)
• m is no of + and n is no -'s
  we get m-n=-1 as given in other comments
• 10 years agoHelpfull: Yes(0) No(0)
• 161-(85+65)+89=100
  m=2,n=1 therefore
  m-n=2-1=1
  Ans:opt 3
  
• 10 years agoHelpfull: Yes(0) No(0)
• 161-85-65+89=100
  So. m=1 and n=2
  So, m-n=1-2 =-1
• 10 years agoHelpfull: Yes(0) No(0)
• 161 - 85 - 65 + 89 =100
  m=1
  n=2
  m - n = 1 - 2= -1
• 10 years agoHelpfull: Yes(0) No(0)
• 2) -1
  bcz 161-85-65+89=100
  m=1
  n=2
  therefore m-n=-1
• 10 years agoHelpfull: Yes(0) No(0)
• 161-85-65+89=100
  as + is m and - is n therefore m= 1 and n=2 .hence m-n=-1
  the option is (2)
• 10 years agoHelpfull: Yes(0) No(0)
• 161-85-65+89= 100
  as m is numer of "+" and n is number of "-" . so m=1,n=2 then m-n= 1-2= -1.
  so answer is 2)
• 10 years agoHelpfull: Yes(0) No(2)
• not understand this...!!!
• 10 years agoHelpfull: Yes(0) No(2)
• nothin my try is 161-85=76
  76-65=11
  11+89=100
  so 161-85-65+89=100
• 9 years agoHelpfull: Yes(0) No(0)
• 161-85-65+89=100
  m=1 and n=2 then m-n=1-2=-1
  
• 9 years agoHelpfull: Yes(0) No(0)
• 161-85-65
  89=100
  m=1,n=2
  m-n
  1-2=-1
  
• 9 years agoHelpfull: Yes(0) No(0)
• 161-(85+65)+89 = 100
  m=2
  n=1
  m-n=1
  hence option 3
• 9 years agoHelpfull: Yes(0) No(0)
• see answer to get is 100
  +89-85=4
  161+4-65=100
• 7 years agoHelpfull: Yes(0) No(0)
• 161-85-65+89 = 100
  so m =1,n =2 then (m-n) =-1
• 3 years agoHelpfull: Yes(0) No(0)