Statement 1: z³ is an integer doesn't imply that z is an integer too.sud21 wrote:Is Z an integer?
1). Z^3 is an integer
2). Root z is an integer.
For example,
- # z = cube root of 2 is not an integer but 2 is
# Both z = 3 and z³ = 27 are integers
Statement 2: As √z is an integer, z = (√z)² will be also an integer.
Sufficient
The correct answer is B.
