What can you catch but never throw?

Take one out and scratch my head, I am now black but once was red. What am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

When 99 is considered higher than 100?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Solve the counting riddle by identifying the number of triangles in the given picture.

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

Can you name some countries which do not have the alphabet 'A' in them?

Can you find the key in the picture below?