tolong dijawab ya kaka yg paling pinter no 1-10

no.1
a. 22 , 27 , 32
b. 27 , 36 , 46

2. a) Un = -1 + 2n
b) Un = 9 + n

3. a) Un = 3n + 1
U1 = 3(1) + 1 = 4
U2 = 3(2) + 1 = 7
U3 = 3(3) + 1 = 10
U4 = 3(4) + 1 = 13
b) Un = n(n-1)
U1 = 1(1-1) = 0
U2 = 2(2-1) = 2
U3 = 3(3-1) = 6
U4 = 4(4-1) = 12

4. Beda = 4
a) Un = a + (n-1)b
U12 = 7 + (11)4 = 51
b) Sn = n/2 (a+Un)
S12 = 12/2 (7+51) = 6(58) = 348

5. Un = a×r^n-1
U2 = a×r^1
8 = 4r
2 = r
a) U13 = 4 × 2¹² = 16384
b) Sn = a(r^n - 1)/r-1
S15 = 4(2^14 - 1)/2-1 = 4(16384 - 1)/1 = 4(16383) = 65532

6.