September 2022 1 15 Report

[tex]\color{aqua} \underline{ \small{ \colorbox{black}{ \gray{ \boxed{{ \sf \: ✨ \color{fdff28}{QUIZ}✨{ { \pink{ \boxed{ \color{fdff28}{ \: - \tt \: MATEMATIKA - \: }}}}}}}}}}} \\ \\ [/tex]
[tex] \begin{array}{cccc} &&& \bigcirc \\ && \bigcirc& \bigcirc \bigcirc \\ & \bigcirc& \bigcirc \bigcirc& \bigcirc \bigcirc \bigcirc \\ \bigcirc & \bigcirc \bigcirc& \bigcirc \bigcirc \bigcirc& \bigcirc \bigcirc \bigcirc \bigcirc \\ (i)&(ii)&(iii)&(iv) \end{array}[/tex]
1. rumus suku ke-n pada pola diatas adalah ...
[tex] \begin{aligned}&{\sf{a.} \: } \tt{n(n + 1)} \\ &{\sf{b.} \: } \tt{ \frac{n(n - 1)}{2} } \\ &{\sf{c.} \: } \tt{ \frac{n(n + 1)}{2} } \\ &{\sf{d.} \: } \tt{n(n - 1)} \end{aligned} \\ \\ [/tex]
2. banyak lingkaran pada pola ke-100 adalah ...
a. 10.100
b. 5.050
c. 1.010
d. 50.500​

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