How will a father, a mother and their two sons and two daughters cross the river?

Question

A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?

Answer 1

trip 1:-guard and criminal goes guard come back
trip 2:- guard and son goes , son stays on the other side of bank, guard and criminal come back
trip 3:-dad and other son goes to other side, dad comes back
trip 4:- mom and dad goes, dad stays and mom returns
trip 5:-guard and criminal goes, and stays there, dad comes back
trip 6:-mom and dad goes, dad stays mom come back
trip 7:-mom and daughter goes, guard and criminal come back
trip 8:-guard and daughter goes, guard comes back
trip 9:-guard and cirmianl goes to other side of bank