Table:
0
A
B
C
D
E
1
Specimen weight/size
Calculated activity ( Bq )
Calculated activity ( Ci )
Estimated activity GR(api)
Estimated exposure ( mRem )/hr*
2
1000 g / 8.79 cm
183355
4.96×10 −6
8,449.31
2.78
3
100 g / 4.08 cm
18336
4.96×10 −7
844.93
0.28
4
10 g / 1.89 cm
1834
4.96×10 −8
84.49
0.03
5
1 g / 8.79 mm
183
4.96×10 −9
8.45
0.00
6
0.1 g / 4.08 mm
18
4.96×10 −10
0.84
0.00
7
0.01 g / 1.89 mm
2
4.96×10 −11
0.08
0.00

Questions and formulas:
Question: If the calculated activity (CI) is  4.96×10 −11, what is the specimen weight/size?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="4.96×10 −11"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="4.96×10 −11"),1))
Level: medium
Question: If the specimen weight/size is 1000 g / 8.79 cm, what is the calculated activity?
Formula: SUMIFS(B1,A1,"1000 g / 8.79 cm")
Formula2: SUMIFS(B2:B7,A2:A7,"1000 g / 8.79 cm")
Level: easy