Table:
0
A
B
C
D
E
1
Number
Previous BR No.
Taken into deptal stock
Withdrawn
Disposal
2
17
61059
1963
1966
Scrapped (1966)
3
18
61181
1963
1965
Scrapped (1966)
4
19
61204
1963
1966
Scrapped (1966)
5
20
61205
1963
1965
Scrapped (1966)
6
21
61233
1963
1966
Scrapped (1966)
7
22
61252
1963
1964
Scrapped (1966)
8
23
61300
1963
1965
Scrapped (1966)
9
24 (1st)
61323
1963
1963
Scrapped (1964)
10
24 (2nd)
61375
1963
1966
Scrapped (1966)
11
25
61272
1965
1966
Scrapped (1966)
12
26
61138
1965
1967
Scrapped (1968)
13
27
61105
1965
1966
Scrapped (1966)
14
28
61194
1965
1966
Scrapped (1966)
15
29
61264
1965
1967
Woodham Brothers , later preserved
16
30
61050
1966
1968
Scrapped (1968)
17
31 (2nd)
61051
1966
1966
Scrapped (1966)

Questions and formulas:
Question: Name the most previous br number
Formula: MAX(B1)
Formula2: MAX(B2:B17)
Level: easy
Question: Name the total number of previous br number for number 21
Formula: SUM(FILTER(B1, A1=21))
Formula2: SUM(FILTER(B2:B17, A2:A17=21))
Level: easy