There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

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?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

Can you fill the blank with the correct number?

6 30 870 756030 _____

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

Find out the missing number in the picture attached:

I shave every day, but my beard stays the same. What am I?

What number when divided in half becomes zero?

There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?