Table:
0
A
B
C
D
E
F
G
1
Graphics mode
Char cells
Pixels
Hardware colours
used (KB)
map
Type
2
0
80 × 32
640 × 256
2
20
3000–7FFF
Graphics
3
1
40 × 32
320 × 256
4
20
3000–7FFF
Graphics
4
2
20 × 32
160 × 256
8
20
3000–7FFF
Graphics
5
3
80 × 25
640 × 200
2
16
4000–7FFF
Text
6
4
40 × 32
320 × 256
2
10
5800–7FFF
Graphics
7
5
20 × 32
160 × 256
4
10
5800–7FFF
Graphics
8
6
40 × 25
320 × 200
2
8
6000–7FFF
Text

Questions and formulas:
Question: What is the used (kb) when the graphics mode is 4?
Formula: SUM(FILTER(E1, A1=4))
Formula2: SUM(FILTER(E2:E8, A2:A8=4))
Level: easy
Question: If graphics mode is less than 1.0, what are the char cells?
Formula: LET(query1,SUMMARIZE(B1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,2)<1))
Formula2: LET(query1,SUMMARIZE(B2:B8,SUMX(A2:A8)),FILTER(query1,CHOOSECOLS(query1,2)<1))
Level: hard