Asked by Frank
                Find the 9th,the 21st, the 50th, the nth term of the Ap 3¼,5½,7¾,10,12¼
            
            
        Answers
                    Answered by
            oobleck
            
    clearly, a = 3¼ and d = 2¼
an = a+(n-1)d
so now just plug in your various values of n.
    
an = a+(n-1)d
so now just plug in your various values of n.
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