An algebra problem by Anish Roy

Algebra Level 3

Before Rick can open up his gym locker, he must remember the combination. Two of the numbers of the three-term sequence are \(17\) and \(24,\) but he has forgotten the third, and does not know the order of the numbers. There are \(40\) possibilities for the third number. At ten second per try, at most how long(in minutes) will it take him to exhaust all possibilities?

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