Answer:
I am an odd number. Take away a letter and I become even. What number am I?
What insect does a blacksmith manufacture?
The dirtier I get, the whiter I am. What am I?
What jumps when it walks, but sits when it stands?
Of the king I am blue and of the peasant I am red. Of the frog I am cold and of the dog I am hot instead. What am I?
What language does a billboard speak?