100
How many rules are there to change nouns from singular to plural?
5 rules
1. Add 's'
2. Add 'es' if the noun ends with s,ss,ch,sh,x,z.
3. Add 'ies' if the noun ends with a consonant and y.
4. Add 'ves' if the noun ends in 'f' or 'f' sound.
5. Add 'es' if the noun ends with consonant and o.