JEE Mains Model Paper 19

Question : 38 of 90

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 arethe numbers obtained on the die, then the probability that ωr1+ωr2+ωr3 = 0 is