Which one of the following statements is a promissory note?
1
I promise to pay Q Rs. 7,000, 7 days after my marriage.
2
On demand, I promise to pay B or bearer Rs. 5,000
3
I promise to pay Rs. 5,000 on C's death provided C leaves with me enough money to pay that sum.
4
I acknowledge to be indebted to you for Rs. 10,000 to be paid on demand for value received.