# SOLUTION: Consider the arithmetic sequence; 2,7,12,17,22,.... what is the ordinal of the term 102?

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 Click here to see ALL problems on Sequences-and-series Question 54071: Consider the arithmetic sequence; 2,7,12,17,22,.... what is the ordinal of the term 102?Answer by stanbon(57203)   (Show Source): You can put this solution on YOUR website!Consider the arithmetic sequence; 2,7,12,17,22,.... what is the ordinal of the term 102? --------- The first term is a=2 The difference is d=7-2=5 The nth term is a(n)=a+(n-1)d EQUATION: 102=2+(n-1)5 100=(n-1)5 n-1=20 n=21 The ordinal is 21 Cheers, Stan H.