SOLUTION: Suppose a sequence has s4=13 and s5=20. Find the value of u5

Question 1192834: Suppose a sequence has s4=13 and s5=20. Find the value of u5
Answer by ikleyn(52788) (Show Source): You can put this solution on YOUR website!
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If, in accordance with the common sense, s5 is the sum of 5 terms and s4 is the sum of 4 terms, 

while u5 is the 5-th term, then


    u5 = s5 - s4.

Solved.

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It is a very bad style to present a Math problem without explanation/definition what the terms are.

Only a person, whose Math education was reading puzzles, may allow to write Math problems in this way.

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