Translation:Ea este o fată și el este un băiat.
Are both "Ea e o fată" and "Ea e fată" correct?
This is a difficult one to remember, honestly. You're only shown it once.
Are there two types for third person singular ( e, este) ? Are they used equally ?
Yes, they are interchangeble, both are correct.
Why is there a different word for a?
the "a" changes gender to match the noun it precedes. o = feminine, un = masculine.
Like French ?
This one was really hard