Table:
0
A
B
C
D
E
F
1
Platform
Frequency (per hour)
Destination
Service Pattern
Operator
Line
2
1
4
Highbury & Islington
All stations via Shoreditch High Street
London Overground
East London
3
1
4
Dalston Junction
All stations via Shoreditch High Street
London Overground
East London
4
1
4
London Bridge
All stations
Southern
Metro
5
2
4
Crystal Palace
Next station
London Overground
East London
6
2
4
West Croydon
All stations
London Overground
East London
7
2
2
London Victoria (Mon-Sat)
All stations via Clapham Junction
Southern
Metro
8
2
2
Caterham (Mon-Sat)
All stations via East Croydon
Southern
Metro
9
2
2
West Croydon (Peaks & Sun only)
Fast to Norwood Junction
Southern
Metro
10
2
2
Tattenham Corner (Sun only)
All stations via East Croydon
Southern
Metro

Questions and formulas:
Question: How many Platforms have a Frequency of less than 2?
Formula: SUM(FILTER(A1, B1<2))
Formula2: SUM(FILTER(A2:A10, B2:B10<2))
Level: easy