1. A offered to sell to B a particular car for P2,000,000. Before B could consent, A withdrew the offer. Was A allowed to do so?
2. A went to a store and offered to buy a certain watch for P100,000. The seller said he was willing to give to for P120,000. Whereupon, A turned to go away because he did not want to pay that price. The seller called him back and said that he was willing to sell the watch for P100,000. Is A allowed not to buy said watch?
3. A offered 20 fountain pens to B for P1,000 each. B answered by letter that he was willing to purchase 30 fountain pens at said price at P1,000 each. Is the contract perfected?
4. A offered on January 1. B accepted on January 8. The letter of acceptance was received by A on January 15. But on January 12, B had already written a letter revoking the acceptance. Was there a meeting of the minds?
5. A makes an offer to B on January 1. B makes known his acceptance in a letter received at the house of A on January 5. However, on January 4, A had died. Was there a meeting of the minds?
6. A makes an offer to B on January 1. B writes a letter on January 3, accepting the offer. This letter is received by A on January 5. But on January 4, B had died. Was there a meeting of the minds?
7. B interested in a particular car at a car exchange company asked S for the price. S said: "P3,500,000." B however could not make up his mind whether to buy or not. So S told B, "B, I will give you a week to make up your mind. In the meantime, I will reserve this car for you." Before the week is over, can S withdraw the offer to sell the car for P3,500,000?
8. A offered to sell his house and lot for P10M to B, who was interested in buying the same. In his letter to B, A stated that he was giving B a period of one month within which to raise the amount, and that as soon as B is ready, they will sign the deed of sale. One week before the expiration of the onemonth period, A went to B, and told him that he is no longer willing to sell the property unless the price is increased to P15M. May B compel A to accept the P10M first offered, and execute the sale?
9. If in the preceding number, S has been given P20,000 by B in consideration for the option, can S withdraw the offer to sell until after the expiration of the one month period?
10. "For Sale: 900 sq. meter lot with a brand new 1-1/2 storey house at 1445 Perdigon, Paco, Manila for P10 million cash." Is this a definite offer?
11. "For Sale" 1,000 sq. meter lots at P100 million at P150 million a lot at South Forbes Park Tel. 88-000-00." Is this a definite offer?
12. A bought a fountain pen which was represented as possibly being able to write even underwater. A also knew that the pen's ability was questionable, and yet A bought the said pen. Was the consent of A vitiated by mistake?
13. A and B were real estate partners. A heard of a possible purchaser of a parcel of land owned by the firm. But A did not inform B. Instead, A persuaded B to sell to him (A) B's share at a nominal amount, after which A sold the whole parcel at a big profit. B sued A for damages for alleged deceit. A's defense was that he after all had not been asked by B about possible purchasers. Will the action of B prosper?
14. X, desiring to buy certain property, hired an expert to ascertain its true value. But the expert's opinion turned out to be wrong and X was, therefore misled. May X ask for annulment of the contract?
15. When his father died, but before delivery of the property to him, a son sold his share of the property inherited. Is the sale valid?
16. When his father was still alive, A sold to B the property he (A) expected to receive from his father. Is the contract valid?