If "m" is an odd integer and "n" an even integer, which of the following is definitely odd?
(a) (2m+n)(m-n)
(b) m-n)
(c) m*n
(d) (m +n)

• d)m+n is the answer where m is odd and n is an even integer...sum of odd+even=odd(definitely)
• 11 years agoHelpfull: Yes(16) No(0)
• what abt m-n
  can anyone explain?
• 11 years agoHelpfull: Yes(6) No(0)
• thanku @amrit
• 11 years agoHelpfull: Yes(0) No(0)
• 3rd one is ans
• 11 years agoHelpfull: Yes(0) No(3)
• no doubt last option
• 11 years agoHelpfull: Yes(0) No(0)
• m+n...
  sum of even and odd integer gives odd
  
• 11 years agoHelpfull: Yes(0) No(0)
• its option(d)=m+n
  let m=3,n=4
  m+n=3+4=7 which is odd
• 11 years agoHelpfull: Yes(0) No(0)
• m+n
• 11 years agoHelpfull: Yes(0) No(0)