x1/5 > x1/3
Dividing by x1/3 on both sides we get
x1/5 - 1/3 > 1
x-2/15 > 1
x2/15 < 1
So, x is less than 1. Here, x can be either < -1 or between 0 and 1.
- x2 > x3
Is always true - x1/3 > x4
Is true only for positive x. If x is < -1, this becomes false as (-1)4 turns out to be even. - 1 > x1/3 > x-3
Is not true for positive x as x-3 > x1/3 - x-1/3 > x3
Is always true
So, 1, and 4 are true. 2, 3 are false.
So, answer is 2. 2