JEE Advanced Model Paper 16 with solutions for online practice

Question : 49 of 69

Marks: +1, -0

Let ω be a complex cube root of unity with ω ≠ 1. A fair die is thrown three times. If r1,r2 and r3 are the numbers obtained on the die, then the probability that ωr1 + ωr2 + ωr3 = 0 is