If a and b are integers and a is not equal to b, is ab > 0?
(1) a^b > 0
(2) a^b is a non-zero integer
(1) a^b > 0
(2) a^b is a non-zero integer
Is the ans C?ricaototti wrote:If a and b are integers and a is not equal to b, is ab > 0?
(1) a^b > 0
(2) a^b is a non-zero integer
Lets plug values
Stm1. assume a=2, b=3, ab>0 but when a=2, b=-3 in this case ab<0 so, insufficient
Stm2. a^b is non zero, means it could be negative or positive similarly it is insufficient.
Combining 1+2, it is sufficient, when a=2, b=-3,
Hence, C
