Kak tolong no 3 dan 5 dong kak aku masih belum ngerti

3. 27^(1/2 . 2/3) = 27^(1/3) = 3^(3/3) = 3 (A)
5. 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66
+2 +3 +4 +5 +6 +7 +8 +9 +10 +11
66 buah (C) -> Jawab

[tex] \left[\begin{array}{ccc}3\end{array}\right]\\\\(27^{ \frac{1}{2}})^{\frac{2}{3}}\\= (3^{ \frac{3}{2}})^{ \frac{2}{3}}\\= 3\\\\ \left[\begin{array}{ccc}5\end{array}\right]\\\\1 , 3 , 6 , 10 , ...\\\\PolaBarisanSegitiga\\Un = \frac{1}{2}n(n + 1)\\U11 = \frac{1}{2} . 11(11 + 1)\\U11 = \frac{11}{2}(12)\\U11 = 66 buah [/tex]


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