You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Can you find out the total number of triangles in the given figure?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

Using Only Five 5's and any mathematical operator make sum as 37

If Rajina's daughter is my daughter's mom, who am I to Rajina?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

What work can one never finish?

What is the next number in the series?

15 29 56 108 208 ?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?