4. In how many ways can 5 persons A, B, C, D and E sit
around a circular table if :
(i) B and D sit next to each other?
(ii) A and D do not sit next to each other?
Answers
Answered by
5
Answer:
12
Step-by-step explanation:
A ξ B not sit together = Total −(AξBsittogether)
⇒ Total permutation =(5−1)!=4!=24
A ξ B sit together : AξB should be considered as 1 entity so now 4 entities to be seated =3!, But AξB can interchange their places,
∴3!×2!=12
⇒ Required =24−12=12
Hence, the answer is 12.
Answered by
1
Answer:
12
Step-by-step explanation:
b and d sit together d sit between b and c and a sit next c
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