Question

A round table conference is to be held between delegates of $15$ companies. In how many ways can they be seated if delegates from two MNCs may wish to sit together?

• A. $13!\times 2!$
• B. $14!\times 2!$
• C. $14!$
• D. $13!$

Answer 1

The correct option is A $13!\times 2!$

Since two persons are two be taken as 1 entity.

Subtract $15-2=13$

So , 13 and 1 entity

Total $14$ , which is arranged in $(14-1)!=13!$.

Rest $2$ can be arranged in $2!!$ ways

Total $=2!\times 13!$