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JEE Advanced Model Paper 16 with solutions for online practice

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Question : 49

Total: 69

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

1
18
1
9
2
9
1
36

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