An urn containsf 10 red and 8 white balls. Write sample space S and n(S). Write the events A and B using set form and mention n(A) and n(B) if A is the event that bell is while, B is the event that ball is neither white nor red.

Answer

`S={R_(1),R_(2),R_(3),R_(4),R_(5),R_(6),R_(7),R_(8),R_(9),R_(10),W_(1),W_(2),W_(3),W_(4),W_(5),W_(6),W_(7),W_(8)},n(S)=18`
`A={W_(1),W_(2),W_(3),W_(4),W_(5),W_(6),W_(7),W_(8)},n(A)=8`,
`B={" " },n(B)=0`