a,b,c,d,e,f,g,h sitting in a row what is the probability that a,b,d are sitting together? Pick:
A) 1 / 5
B) 3 / 28
C) 1 / 7
D) 1 / 14
E) 5 / 28

Rationale: "total number of arrangement is = 8 ! = 40320 favorable event i . e a , b and d can be arranged in 3 ! and the remaining can be arranged in 6 ! since abd can be in any of the six positions . so 3 ! * 6 ! / 8 ! = 3 / 28 answer : b"
Answer: B