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

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Spot what is wrong here in below Picture?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

If 1+9+8=1, what is 2+8+9?

What begins with T, ends with T, and has T in it?

A devotee visits 9 temples when he visits India. All these nine temples have one thing in common - there are 100 steps in every temple. The devotee puts the Re.1 coin after climbing up every step. He does the same while climbing down every step. At each temple, the devotee offers half of his money from his pocket to god. In this way, his pocket becomes empty after he visits the 9th temple.

Can you calculate the total amount he had initially?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

What does a man do only once in his lifetime, but women do once a year after they are 29?