Good Riddles

Question: I'm 10 years old my brothers half my age now I'm 100 years old how old is my brother now?

Question: I can be curved or straight And have many legs But with four letters less I am exactly the same What am I?(5 letters)

Question: When the clock has no angle I will own yesterday, tomorrow and tonight What m I?

Question: what do you call a pair of pairs?

Question: A horse jumps over a castle and lands on a man, then the man disappears. How was this possible?