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IIT JEE Advanced 2010 Paper 1

Section: Mathematics

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Question : 57 of 84

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

[JEE Adv 2010 P1]

1
18
1
9
2
9
1
36

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