Hi, someone plz help me with this concept!! When an offer includes a condition for only a limited number of people can accept the offer (eg.For the first 10 people who do these.......), and if the offeree accepts the offer and provided intention and consideration, but without known if he/she is within the first 10 people condition. can the offeror later put up a defence argument, saying acceptance must be made within a reasonable period of time? or can the offeror not do that because of the meaning of the condition is to vague? Thanks 