DeoP352749 DeoP352749

30-10-2022
Mathematics

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the rule for being the nth item in a certain sequence is n(n+1)/2. what is the 4th term in this sequence ? a.) 4b.)10c.)16d.)20

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JhanviX134821 JhanviX134821

30-10-2022

The 4th term of the sequence can be determined as,

[tex]\begin{gathered} a_n=\frac{n(n+1)}{2} \\ a_4=\frac{4(4+1)}{2} \\ a_4=10 \end{gathered}[/tex]

Thus, option (b) is correct.

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