KVPY SX SB Exam 19-Nov-2017 Question Paper

Suppose the three non-linked autosomal genes A, B and C control coat color in an animal and the dominants alleles A, B and C are responsible for dark color and the recessive alleles a, b and c are responsible for light color.
If a cross between a male of AABBCC genotype and a female of aabbcc genotype produce 640 off springs in the ${\mathit{F}}_2$ generation, how many of them are likely to be of the parental genotype ?