Question

There are nine different books on a shelf, four red and five are green. Number of ways in w̧hich it is possible to arrange these books if

Column I		Column II
A	the red books must be together and green books together	P	$(4)6!$
B	the red books must be together whereas the green books may or may not be together	Q	$(8)6!$
C	no two books of the same colour are adjacent	R	$(20)6!$
D	if the books are arranged on a round table and no two of the three specified books are together	S	$(24)6!$

• A. $A\to P;B\to S;C\to P;D\to R$
• B. $A\to Q;B\to S;C\to P;D\to R$
• C. $A\to R;B\to S;C\to P;D\to R$
• D. $A\to S;B\to S;C\to P;D\to R$

Answer 1

Answer: (B)

Correct answer is (b) $A\to Q;B\to S;C\to P;D\to R$