Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

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?

What month of the year has 28 days?

Why is the Hole below a Lock?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

Keyboard words are not in alphabetical order, Why?

I shave every day, but my beard stays the same. What am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Name a key which is hardest to turn.