Table:
0
A
B
C
D
E
1
Internet Plan
Downstream
Upstream
Bandwidth Included
Price
2
4mb
1024 kbit
128 kbit
Unlimited MB
14 EUR
3
8mb
2048 kbit
192 kbit
Unlimited MB
22 EUR
4
12mb
4096 kbit
256 kbit
Unlimited MB
30 EUR
5
16mb
6144 kbit
384 kbit
Unlimited MB
40 EUR
6
60mb
8192 kbit
512 kbit
Unlimited MB
50 EUR

Questions and formulas:
Question: What is Internet Plan, when Price is "22 EUR"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="22 eur"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,E2:E6="22 eur"),1))
Level: medium
Question: What is Downstream, when Upstream is "384 kbit"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="384 kbit"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,C2:C6="384 kbit"),2))
Level: medium
Question: What is Bandwidth Included, when Price is "50 EUR"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="50 eur"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,E2:E6="50 eur"),4))
Level: medium
Question: What is Upstream, when Price is "14 EUR"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="14 eur"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,E2:E6="14 eur"),3))
Level: medium
Question: What is Bandwidth Included, when Internet Plan is "8mb"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="8mb"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,A2:A6="8mb"),4))
Level: medium
Question: What is the Price, when Upstream is "256 kbit"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="256 kbit"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,C2:C6="256 kbit"),5))
Level: medium