Which number should replace the question mark?

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

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

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

I look at you, you look at me I raise my right, you raise your left. What am I?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

what does this below rebus represent identXQQQQQME

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

Find the next number in the sequence

1, 2, 6, 21, 88, __?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?