1st word is 38, 16th word 73 find out 31 th word

1.	1st word is 38, 16th word 73 find out 31 th word
Answer» Use APA=38D =d73 =38+(16-1)d73-38=15dD=7/3Use thisN=a+(n-1)d=38+30×7/338+70108???? 108

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