If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

My location can be determined by the below rebus.
So where am i ?

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

I’m tall when I’m young, and I’m short when I’m old. What am I?

What English word has three consecutive double letters?

If an electric train is travelling south, then which way is the smoke going?