Table:
0
A
B
C
D
E
F
G
1
Headphone Model
Headphone Class
Driver-matched dB
Construction
Earpads
Termination
US MSRP
2
iGrado
Prestige
0.1
Plastic
Comfort Pads
1/8" (3.5 mm) plug
$49
3
SR60i
Prestige
0.1
Plastic
Comfort Pads
1/8" (3.5 mm) plug with 1/4" adaptor
$79
4
SR80i
Prestige
0.1
Plastic
Comfort Pads
1/8" (3.5 mm) plug with 1/4" adaptor
$99
5
SR125i
Prestige
0.1
Plastic
Comfort Pads
1/4" (6.5 mm) plug
$150
6
SR225i
Prestige
0.05
Plastic
Bowls
1/4" (6.5 mm) plug
$200
7
SR325is
Prestige
0.05
Aluminum alloy/ Plastic inner sleeve
Bowls
1/4" (6.5 mm) plug
$295
8
RS2i
Reference
0.05
Hand-Crafted Mahogany
Bowls
1/4" (6.5 mm) plug
$495
9
RS1i
Reference
0.05
Hand-Crafted Mahogany
Bowls
1/4" (6.5 mm) plug
$695
10
GS1000i
Statement
0.05
Hand-Crafted Mahogany
Circumaural Bowls
1/4" (6.5 mm) plug
$995
11
PS500
Professional
0.05
Hand-Crafted Mahogany / Aluminum
Bowls
1/4" (6.5 mm) plug
$595

Questions and formulas:
Question: Which headphone models correspond to the US MSRP of $150?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,G1="$150"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G11,G2:G11="$150"),1))
Level: medium
Question: Which terminations correspond to a US MSRP of $49?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,G1="$49"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G11,G2:G11="$49"),6))
Level: medium
Question: How many headphone classes have a US MSRP of $150?
Formula: ROWS(UNIQUE(FILTER(B1, G1="$150")))
Formula2: ROWS(UNIQUE(FILTER(B2:B11, G2:G11="$150")))
Level: medium
Question: How many values for earpads correspond to the headphone class Prestige and a US MSRP of $79?
Formula: ROWS(UNIQUE(FILTER(E1, (B1="Prestige")*(G1="$79"))))
Formula2: ROWS(UNIQUE(FILTER(E2:E11, (B2:B11="Prestige")*(G2:G11="$79"))))
Level: medium
Question: Which headphone models have a driver-matched DB of 0.1 and a US MSRP of $49?
Formula: LET(query1,LET(query1,FILTER(A1:G1,G1="$49"),SUMMARIZE(CHOOSECOLS(query1,1),SUMX(CHOOSECOLS(query1,3)))),FILTER(query1,CHOOSECOLS(query1,2)=0.1))
Formula2: LET(query1,LET(query1,FILTER(A2:G11,G2:G11="$49"),SUMMARIZE(CHOOSECOLS(query1,1),SUMX(CHOOSECOLS(query1,3)))),FILTER(query1,CHOOSECOLS(query1,2)=0.1))
Level: hard
Question: Which terminations correspond with headphone model SR80I?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,A1="SR80i"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G11,A2:A11="SR80i"),6))
Level: medium