Table:
0
A
B
C
D
E
1
System
Band
Uplink (MHz)
Downlink (MHz)
Channel number
2
T-GSM-380
380
380.2–389.8
390.2–399.8
dynamic
3
T-GSM-410
410
410.2–419.8
420.2–429.8
dynamic
4
GSM-450
450
450.6–457.6
460.6–467.6
259–293
5
GSM-480
480
479.0–486.0
489.0–496.0
306–340
6
GSM-710
710
698.2–716.2
728.2–746.2
dynamic
7
GSM-750
750
747.2–762.2
777.2–792.2
438–511
8
T-GSM-810
810
806.2–821.2
851.2–866.2
dynamic
9
GSM-850
850
824.2–849.2
869.2–894.2
128–251
10
P-GSM-900
900
890.0–915.0
935.0–960.0
1–124
11
E-GSM-900
900
880.0–915.0
925.0–960.0
975–1023, 0-124
12
R-GSM-900
900
876.0–915.0
921.0–960.0
955–1023, 0-124
13
T-GSM-900
900
870.4–876.0
915.4–921.0
dynamic^
14
DCS-1800
1800
1,710.2–1,784.8
1,805.2–1,879.8
512–885
15
PCS-1900
1900
1,850.2–1,909.8
1,930.2–1,989.8
512–810

Questions and formulas:
Question: What band is the highest and has a System of gsm-450?
Formula: MAX(FILTER(B1,A1="gsm-450"))
Formula2: MAX(FILTER(B2:B15,A2:A15="gsm-450"))
Level: easy