In the covalent compound CH3, the Greek prefix used to represent the anion is Answer here​

Tri.

Explanation:

''Tri'' is the Greek prefix used to represent the CH3 because there are three hydrogen atoms to form the covalent compound so in Greek method ''Tri'' is used for three. In Greek system, there are certain names for prefixes such as ''di'' is used for two, ''tri'' is used for three, ''tetra'' is used for four etc. This method only provides information about the number of atoms that form the covalent compound.

120,630,890

step-by-step explanation:

110+10=120,620+10=630,880+10=890