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What is the 4th term of the arithmetic sequence 1 , 2 , 3

User Sivilian
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1 Answer

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For example, for n=4 (4th term):
a4 = 8 - (4)(4-1)
a4 = 8 - (4)(3)
a4 = 8 - 12
a4 = -4
User Ghis
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