What is common among 11, 69, and 88?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

What word is represented by this rebus?

If eleven plus two equals one, what does nine plus five equal?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Decode below rebus
D
N
A
T
S , D

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

A man dies of old age on his 25 birthday. How is this possible?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?