Question about CHROMOSOMES?

The horse (Equus caballus) has a deploid number of 64 chromosomes while the *** (Equus asinus) has 62 chromosomes. Predict the number of chromosomes to be found in the hybrid offspring (mule) produced by mating a male *** (jack) to a female horse (mare).

I just don't get how u predict...??
2 answers 2