1.

If onecap is pickedat random , whatis theprababailitythat itis eitherblueor yellow ?

Answer»

<P>`(2)/(9)`
`(1)/(4)`
`(3)/(8)`
`(6)/(11)`

SOLUTION :TOTALNUMBER of caps = 12
`n(S) =""^(12)C_(1)=12`
Outof(2 blue+ 1 yellow ) capsnumberofwaysto pick one cap n(E) `=""^(3)C_(1)=3`
Required probability `P(E) =(n(E))/(n(S))=(3)/(12)=(1)/(4)`


Discussion

No Comment Found

Related InterviewSolutions