Jawaban:
1.
mis total tiket = x
penjualan hr ke1 = 24
sisa hr ke1 = x-24
penjualan hr ke2 = ⅔(x-24)
penjualan hr ke3 = 6
total tiket = penjualan hr ke1 + ke2 + ke3
x = 24 + ⅔(x-24) + 6
x = ⅔x + 24 - 16 + 6
⅓x = 14
x = 42 tiket
2.
* utk halaman 1-69, 80-169, 180-263: tiap 10 halaman muncul angka 7 sekali
* utk halaman 70-79, 170-179: tiap 10 halaman muncul angka 7 11kali
hal 1-69 : 7 kali
hal 70-79 : 11 kali
hal 80-169 : 9 kali
hal 170-179 : 11 kali
hal 180-263 : 8 kali
Total. : 46 kali
3. rumus teleskopik:
[tex] \frac{1}{ {n}^{2} + n} = \frac{1}{n} - \frac{1}{n + 1} [/tex]
[tex] \frac{1}{ {1}^{2} + 1 } = \frac{1}{1} - \frac{1}{2} [/tex]
[tex] \frac{1}{ {2}^{2} + 2} = \frac{1}{2} - \frac{1}{3} [/tex]
dst
maka persamaan di atas akan menjadi
[tex] \frac{1}{1} - \frac{1}{2} + \frac{1}{2} - \frac{1}{3} + \frac{1}{3} - \frac{1}{4} + \frac{1}{4} - \frac{1}{5} + ... + \frac{1}{2009} - \frac{1}{2010} [/tex]
[tex] - \frac{1}{2} + \frac{1}{2} = 0[/tex]
[tex] - \frac{1}{3} + \frac{1}{3} = 0[/tex]
dst
sehingga yg tersisa hanya
[tex] \frac{1}{1} - \frac{1}{2010} [/tex]
[tex] = \frac{2009}{2010} [/tex]
[answer.2.content]
