Correct Answer - C
Sample space A dice is thrown thrice ,`n(s)=6xx6xx6`
Fovoratble wvents ` omega^(r1)+omega^(r2)+omega^(r3)=0`
i.e `(r_1,r_2,r_3)` are ordered 3 triples which can take values `{:((1,2,3)", "(1,5,3)", "(4,2,3)", "(4,5,3)),((1,2,6)", "(1,5,6)", "(4,2,6)", "(4,5,6)):}}` i.e 8 ordered pairs and each can be arranged in 3! ways =6
`therefore n(E)=8xx6 rArr P(E)=(8xx6)/(6xx6xx6)=2/9`