What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Why are all black people so quick ?

What demands an answer, but asks no questions

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?