Q3.

P@Q' means 'P is the mother of Q' 

'P & Q' means 'P is the wife of Q' 

'P # Q' means 'P is the husband of Q' 

If 'A # B @ C @ D & E', then how is D related to A?

Q4.

Which letter-cluster will replace the question mark (?) to complete the given series? 

XSMP, WTKR, VUIT, ?, TWEX

Q5.

Two statements are given followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. 

Statements: 

All lotuses are roses. 

All lotuses are hibiscuses. 

Conclusions: 

I. All roses are hibiscuses. 

II. Some hibiscuses are lotuses. 

III. Some roses are hibiscuses.