The Hilton family are taking a train ride! On the train there is a grandmother, a grandfather, two mothers, two fathers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, a mother-in-law, a father-in-law and a daughter-in-law. How many of the family are on the train?

There are 7 members on the train.

Step-by-step explanation:

Grandmother is mother and mother-in-law.

Similarly grandfather is father and father-in-law.

The are four children are - the daughter-in-law, the daughter-in-law,

Hilton's daughter and Hilton's son.

a. Grandmother, mother 1

b. Grandfather, father 1

c. daughter 1, mother 2 sister 1

d. sister 2, daughter 2, and net effect is 1

e. son brother 1, net is 2

f. son 2, net is 3

g. The father or Hilton 2

Hence, there are 7 people.

This is a bit tricky but the answer is seven. The mothers could also refer to the grandmother, same with the other familial relations describe.