Combination of figures (3)
I believe the answer is:
mix
This might be a double definition.
'combination' is the first definition.
(mix is a kind of combination)
'of figures' is the second definition.
The definition suggests a singular noun which matches the answer.
Can you help me to learn more?
(Other definitions for mix that I've seen before include "Mingle, blend" , "Blend or socialise" , "Blend together" , "= 1,009 (L.)" , "Amalgamate, blend" .)