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

I travel all around the world but always stay in the corner. What am I?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

How many times in a given day, minutes and hour clock comes in a straight line ?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

What you cannot hold but it is yours?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?