What is the sum of a certain pair of consecutive odd integers?
(1) At least one of the integers is negative.
(2) At least one of the integers is positive.
Statement 1: could be infinate combinations ---> INSUFF
Statement 2: could be infinate combinations ---> INSUFF
Together, -1+1 = 0 ---> SUFF
Because the question specifies a "pair" = only two numbers.
why?when we combine st1 and st2 we can also get..a series like
-3,0,3,6,9 and here sum is not zero..