61.
Point out the correct item shown below:
There may be a contract without consideration if

67.
Which one of the following statements are under statements is correct in regard as to matter of fact, the agreement is

68.
Which one of the following statements is incorrect?

69.
If the time of performance of the contract is the essence of the contract and the promisor fails to perform the contract by the specified time-

70.
The theory on which quasi-contractual obligations are based is to prevent unjust enrichment. Who is considered to be the real founder of this theory?