Find the value of "?" in the ball picture Riddle below:

I am an odd number. Take away a letter and I become even. What number am I?

What can go up a chimney down, but can’t go down a chimney up?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

How many triangles can you find in this given picture?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

What does the below mathematical rebus mean?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?