How many triangles can you find in this given picture?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

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

which number am I?

John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

Which alphabet letter is a question?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

You visit a home for specially-abled children on the occasion of Christmas where you meet with 50 children. You have a box of chocolates containing 50 chocolates exactly.

What if you were asked to one chocolate to each child in a manner that one chocolate still remains in the box? Is it possible?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?