Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Solve this riddle by finding the odd one out from the rest.

Count the number of triangles in the below picture?

A bomb exploded in a room full of married couples and no one died. How?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

In the image given, you can find several triangles. Can you count them all?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

What number comes next in the series?

5 15 5 18 5 24 14 20 _

81 x 9 = 801. What must you do to make the this equation true?