What number when divided in half becomes zero?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

What came first, the chicken or the egg?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

An ant is travelling on a 1-meter-long rope at 1 cm/second but also the entire rope is being stretched by an extra 1 meter/second. Is it possible for the ant to reach at the end of the rope?

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

Mother's Name is Mrs. SIXTY TWO
Son's Name is FIFTY TWO
Daughter's Name is FORTY TWO
What is Name of Father?